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1.
Rev. cuba. oftalmol ; 32(3): e797, jul.-set. 2019. tab, graf
Artigo em Espanhol | LILACS, CUMED | ID: biblio-1099084

RESUMO

RESUMEN Objetivo: Identificar las características de los pacientes pediátricos con miopías por encima de 6 dioptrías. Métodos: Se realizó un estudio descriptivo y observacional, de corte longitudinal, en 43 niños entre 3 y 15 años de edad con diagnóstico de miopía igual o mayor de 6 dioptrías en uno o ambos ojos (72 ojos), quienes acudieron a la consulta del Servicio de Oftalmología Pediátrica y Estrabismo del Instituto Cubano de Oftalmología "Ramón Pando Ferrer" durante el periodo comprendido entre enero y diciembre del año 2018. Las variables del estudio fueron la edad, el sexo, el color de la piel, la miopía (isometrópica y anisometrópica), la longitud axial, la agudeza visual con corrección, el tipo de corrección óptica, la presencia y el grado de estereopsia. Resultados: Predominó el grupo de 3 a 5 años (34,4 por ciento), el sexo femenino y el color de la piel blanca. La longitud axial aumentó junto con el equivalente esférico de los pacientes. La corrección más usada correspondió a los cristales, aunque se demostró estadísticamente que con los lentes de gas permeables los pacientes presentaban mejor agudeza visual (p= 0,016), donde se registró también la media más alta de equivalente esférico. De 43 pacientes, 20 (46,5 por ciento) no presentaron estereopsia. Los pacientes con anisometropías (64 por ciento) no presentaron estereopsia, lo que fue estadísticamente significativo. Conclusiones: Con los lentes de gas permeables los pacientes presentan mejor agudeza visual y mayor equivalente esférico. La mayor cantidad de pacientes sin estereopsia corresponde a las miopías por anisometropías(AU)


ABSTRACT Objective: Identify the characteristics of pediatric patients with greater than 6 diopter myopia. Methods: An observational descriptive longitudinal study was conducted of 43 children aged 3-15 years diagnosed with myopia equal to or greater than 6 diopters in one or both eyes (72 eyes) who attended the Pediatric Ophthalmology and Strabismus Service at Ramón Pando Ferrer Cuban Institute of Ophthalmology from January to December 2018. The variables considered were age, sex, skin color, myopia (isometropic or anisometropic), axial length, corrected visual acuity, type of optical correction, and presence and degree of stereopsis. Results: A predominance was found of the 3-5 years age group (34.4 percent), female sex and white skin color. Axial length increased with spherical equivalent. The most common correction was glasses, but it was statistically demonstrated that gas permeable lenses provided better visual acuity (p= 0.016) and the highest spherical equivalent mean. Of the 43 patients evaluated, 20 (46.5 percent) did not present stereopsis. Patients with anisometropia (64 percent) did not present stereopsis, which constituted a statistically significant fact. Conclusion: Gas permeable lenses provide better visual acuity and a greater spherical equivalent. Most of the patients without stereopsis have anisometropic myopia(AU)


Assuntos
Humanos , Feminino , Pré-Escolar , Criança , Lentes de Contato/efeitos adversos , Miopia/diagnóstico , Miopia/epidemiologia , Epidemiologia Descritiva , Estudos Longitudinais , Estudo Observacional
3.
Rev. cuba. oftalmol ; 32(2): e611, abr.-jun. 2019. tab
Artigo em Espanhol | LILACS | ID: biblio-1093686

RESUMO

RESUMEN Objetivo: Describir los resultados visuales en la corrección de la alta miopía con implante de lente fáquica ACR-128. Métodos: Se realizó un estudio descriptivo, observacional longitudinal y prospectivo en 60 ojos de 32 pacientes con miopía corregida con lente fáquica ACR-128. Se determinó el componente esférico esperado y observado, el cilindro queratométrico, las agudezas visuales sin corrección y mejor corregidas en el pre y en el posoperatorio y el astigmatismo inducido. El análisis estadístico se realizó con la Prueba T para datos pareados, con una significación del 95 por ciento. Resultados: La edad media fue 27,41 ± 5,91 años, el equivalente esférico preoperatorio -11,54 ± 3,20 dioptrías y el 68,75 por ciento eran femeninas. El componente esférico en dioptrías esperado (-0,53 ± 0,37) y observado (-0,42 ± 0,47) sin diferencias (p= 0,0742). Entre ± 1,00 el 91,67 por ciento y entre ± 0,50 el 70 por ciento. Ningún ojo quedó por encima de +0,50 dioptrías. El cilindro queratométrico en dioptrías, pre (1,44 ± 0,76) y posoperatorio (1,49 ± 0,84) sin astigmatismo inducido (p= 0,6377). El 100 por ciento tenía agudeza visual sin corrección preoperatoria ≤ 0,1 y posoperatoria ≥ 0,3. Después de la cirugía el 10 por ciento alcanzaba 1,0 y 71,6 por ciento ≥ 0,5. Solo el 28,33 por ciento tenía la unidad en el preoperatorio, y el 70 por ciento en el posoperatorio (98,33 por ciento ≥ 0,7). Conclusiones: El implante de lente fáquica ACR-128 proporciona corrección refractiva y predictibilidad favorables para el paciente, al reducir el componente esférico al deseado, no inducir astigmatismo y mejorar la agudeza visual, todo lo que se traduce en un adecuado resultado visual(AU)


ABSTRACT Objective: Describe the visual results of correction of high myopia with ACR-128 phakic lens implantation. Methods: An observational descriptive longitudinal prospective study was conducted of 60 eyes of 32 patients with myopia corrected with the ACR-128 phakic lens. Determination was made of the expected and observed spherical component, the keratometric cylinder, uncorrected and best corrected visual acuity in the pre- and postoperative periods, and induced astigmatism. Statistical analysis was based on the paired T-test with a significance level of 95 percent. Results: Mean age was 27.41 ± 5.91 years, preoperative spherical equivalent was -11.54 ± 3.20 diopters, and 68.75 percent of the patients were female. Spherical component in diopters expected (-0.53 ± 0.37) and observed (-0.42 ± 0.47) without differences (p= 0.0742). Between ± 1.00 diopters 91.67 percent and between ± 0.50 diopter 70 percent. No eye was above +0.50D. Keratometric cylinder in diopters, preoperative (1.44 ± 0.76) and postoperative (1.49 ± 0.84) without induced astigmatism (p=0.6377). In 100 percent visual acuity without correction ≤ 0.1 preoperative and ≥ 0.3 postoperative. After surgery 10 percent reached 1.0 and 71.6 percent ≥ 0.5. Only 28.33 percent had the unit corrected in the preoperative period and 70 percent in the postoperative period (98.33 percent ≥ 0.7). Conclusions: ACR-128 phakic lens implantation provides patients with favorable refractive correction and predictability. This is achieved by reducing the spherical component to desired values, not inducing astigmatism and improving visual acuity, all of which leads to an adequate visual result(AU)


Assuntos
Humanos , Feminino , Adulto , Procedimentos Cirúrgicos Refrativos/métodos , Lentes Intraoculares Fácicas/efeitos adversos , Miopia/etiologia , Epidemiologia Descritiva , Estudos Prospectivos , Estudos Longitudinais , Estudo Observacional
4.
Rev. cuba. oftalmol ; 32(2): e717, abr.-jun. 2019. tab
Artigo em Espanhol | LILACS | ID: biblio-1093685

RESUMO

RESUMEN Objetivo: Evaluar los resultados relacionados con la efectividad y la seguridad en el tratamiento con queratectomía subepitelial asistida por láser con mitomicina C versus queratectomía fotorreactiva con mitomicina C en ojos con miopía o astigmatismo miópico compuesto. Métodos: Se realizó un estudio experimental, longitudinal y prospectivo en el Instituto Cubano de Oftalmología Ramón Pando Ferrer entre abril del año 2016 y abril de 2017. Se empleó un muestreo aleatorio simple por el cual se obtuvo la técnica quirúrgica a realizar. El primer ojo operado fue el derecho y a la semana se realizó la cirugía en el ojo izquierdo, en el cual se aplicó la otra técnica quirúrgica. Esto permitió realizar en cada paciente ambas técnicas quirúrgicas. La muestra quedó constituida por 146 ojos (73 pacientes) que cumplían con los criterios de selección. Resultados: El comportamiento preoperatorio entre los dos grupos fue muy similar. En ninguno de los casos existieron diferencias en las variables que se evaluaron (agudeza visual sin corrección, agudeza visual mejor corregida, esfera, cilindro y equivalente esférico). La diferencia entre los valores preoperatorios y los encontrados a los 6 meses del tratamiento quirúrgico en cada grupo fueron estadísticamente significativos (p= 0,000) para todas las variables analizadas, excepto para la agudeza visual mejor corregida en el grupo de ojos tratados con láser con mitomicina C (p= 0,083). El haze y el defecto de epitelización fueron los dos tipos de complicaciones observadas. Conclusiones: Se demostró que ambas técnicas quirúrgicas son efectivas y seguras(AU)


ABSTRACT Objective: Evaluate the effectiveness and safety of laser-assisted subepithelial keratectomy with mitomycin C vs. photoreactive keratectomy with mitomycin C in eyes with myopia or compound myopic astigmatism. Methods: An experimental prospective longitudinal study was conducted at Ramón Pando Ferrer Cuban Institute of Ophthalmology from April 2016 to April 2017. Simple random sampling was used to decide on the surgical technique to be applied. Surgery was first performed on the right eye using one of the techniques, and then one week later on the left eye with the other technique. That way each patient could undergo both surgical techniques. The sample was composed of 146 eyes (73 patients) meeting the inclusion criteria. Results: Preoperative behavior was very similar in the two groups. In neither case were differences found in the variables analyzed (uncorrected visual acuity, best corrected visual acuity, sphere, cylinder and spherical equivalent). The differences between preoperative values and those found six months after surgery in each group were statistically significant for all the variables analyzed (p= 0.000), except for best corrected visual acuity in the group of eyes treated with laser with mitomycin C (p= 0.083). Haze and epithelization defect were the two types of complications observed. Conclusions: It was demonstrated that both surgical techniques are effective and safe(AU)


Assuntos
Humanos , Feminino , Adulto , Mitomicina/uso terapêutico , Ceratectomia Fotorrefrativa/métodos , Ceratectomia Subepitelial Assistida por Laser/métodos , Lasers de Excimer/uso terapêutico , Miopia/cirurgia , Estudos Prospectivos , Estudos Longitudinais
5.
Rev. Hosp. Clin. Univ. Chile ; 30(2): 95-101, 2019. tab
Artigo em Espanhol | LILACS | ID: biblio-1053128

RESUMO

Purpose: Characterize and describe glaucoma index parameters of the results of visual exams, Optical Coherence Tomography and Visual Field, in high myopic subjects with and without the pathology. Method: Cross sectional and observational study of 39 eyes, 15 high myopic with glaucoma y 24 high myopic without it. Visual Field (VF) were performed, where the global index between both groups were analyzed; Mean Deviation (MD), Model Standard Deviation (MSD) and Visual Field Index (VFI), beside Optical Coherence Tomography (OCT), in which the thickness of the ganglion cells layer (GCL) inside 3 central mm was compared. Results: The results were satisfactory, demonstrating different characteristics between the high myopic group with glaucoma and without it, both in VF and OCT exams. It was obtained in the VF analysis difference in average MD of -4,92 dB + 3,71 (p<0,05); difference in average DSM of 2,01 dB + 2,85 (p>0,05) and VFI with Friedman Test 10,29 (p>0,05). The statistical OCT analysis, when comparing GCL, observed that the Temporary sector (T) had a statistically significant decrease (p<0,05). Conclusions: To continue studies in this investigative line, can expand the knowledge in this area, mainly in the study of the GCL. (AU)


Assuntos
Humanos , Masculino , Feminino , Adulto , Pessoa de Meia-Idade , Tomografia de Coerência Óptica/instrumentação , Tomografia de Coerência Óptica/métodos , Chile , Glaucoma/diagnóstico por imagem , Técnicas de Diagnóstico Oftalmológico/tendências , Miopia
6.
Rev. Soc. Colomb. Oftalmol ; 52(2): 95-100, 2019. graf
Artigo em Espanhol | LILACS, COLNAL | ID: biblio-1053029

RESUMO

Objetivo: determinar la frecuencia de complicaciones en pacientes con miopía axial alta y catarata, a los que se les realizó extracción de catarata por facoemulsificación. Diseño del estudio: observacional descriptivo de frecuencia. Método: se incluyeron 107 ojos de pacientes con miopía axial alta, a los que se les realizó extracción de catarata por facoemulsificación más implante de LIO, operados en 2015. Se realizó una revisión de historias clínicas y descripciones quirúrgicas de los pacientes seleccionados y se evaluó la presentación de complicaciones con un seguimiento a un año después de la cirugía. Resultados: 2 ojos presentaron ruptura de cápsula posterior (1,8 %). Otros 2 ojos presentaron diálisis zonular (1,8 %) y en 3 ojos se evidenció pérdida de vítreo (2,7 %). Durante el primer año postoperatorio de seguimiento se observó desprendimiento de retina en 1 ojo (0,9 %). No se reportaron casos de luxación del LIO a cámara anterior. Conclusión: La frecuencia de complicaciones es similar a la reportada en la literatura mundial e inclusive más baja en algunas variables como la ruptura de capsula posterior y el desprendimiento de retina.


Background: Cataract extraction by phacoemulsifi cation plus intraocular lens (IOL) implant is the most used treatment against the main cause of reversible blindness in the world; the cataract. It is a very successful procedure due to its low frequency of complications and its high reproducibility. However, patients with high axial myopia do not behave in this way and tend to present more complications. Objective: to determine the frequency of complications in patients with high axial myopia and cataract, who underwent cataract extraction by phacoemulsifi cation. Study design: observational descriptive. Method: 107 eyes of patients with high axial myopia were included. All underwent cataract extraction by phacoemulsification plus IOL implantation, in 2015. A review of clinical histories and surgical descriptions of all patients was performed to determine the frequency of complications during a follow-up time of one year aft er surgery. Results: 2 eyes presented posterior capsule rupture (1.8%). Two other eyes presented zonular dialysis (1.8%) and 3 eyes had vitreous loss (2.7%). During the first postoperative year of follow-up, retinal detachment was observed in 1 eye (0.9%). No cases of IOL dislocation to the anterior chamber were reported. Conclusion: The frequency of complications in this population is similar to the one reported in other studies and even lower in some variables such as posterior capsule rupture and retinal detachment.


Assuntos
Facoemulsificação/efeitos adversos , Catarata/diagnóstico , Miopia/diagnóstico
7.
Rev. cuba. oftalmol ; 31(2): 1-10, abr.-jun. 2018. ilus
Artigo em Espanhol | LILACS | ID: biblio-985563

RESUMO

La alta miopía es aquella igual o mayor a -6 dioptrías esféricas, no en función de la curvatura corneal elevada, como es el caso del queratocono, ni por la esclerosis del cristalino que ocurre en etapas preseniles, sino en dependencia de la longitud axial mayor de 25,5 o 26,0 mm. La corrección óptica de estos defectos altos es difícil, ya que es frecuente que los pacientes se sientan incómodos con el uso de gafas, pues no obtienen una buena calidad de visión, y con el fin de mejorarla se han desarrollado distintos procedimientos quirúrgicos. Se presenta una paciente de 26 años de edad con miopía elevada, quien no se adapta a los lentes de contacto y no desea continuar con los espejuelos; no es candidata a la cirugía refractiva corneal. Se le implantaron lentes fáquicas ACR IOL-128 (Soleko, Italia) sin complicaciones. El equivalente esférico preoperatorio -11,5 y -6 dioptrías disminuyó a -1,00 y -0,5 respectivamente, y la agudeza visual sin cristales de cuenta dedos y 0,1 a 0,8 y 0,9 respectivamente. Con este caso se evidencia que las lentes fáquicas son una opción con buenos resultados en la corrección de la alta miopía(AU)


The high myopia, by definition, is that equal or bigger to -6 spherical dioptrías; not in function of the bend high corneal, like it is the case of the queratocono, neither for the sclerosis of the crystalline lens that happens in stages preseniles, but in dependence of the axial longitude bigger than 25,5 or 26,0 mm. The optic correction of these high defects is difficult, since it is frequent that the patients feel uncomfortable with the glasses use, because they don't obtain a good quality of vision and with the purpose of improving it, different surgical procedures have been developed. Young patient 26 years old is presented with high myopia that doesn't adapt to the contact eyeglasseses and she doesn't want to continue with the espejuelos, she is not candidate to surgery refractive corneal and she is implanted eyeglasseses fáquica ACR IOL-128 (Soleko, Italy) without complications. The equivalent spherical preoperatorio -11,5 and -6 dioptrías diminish at -1,00 and - 0,5 respectively and the visual sharpness without glasses of bill fingers and 0,1 at 0,8 and 0,9 respectively. With this case it is evidenced that the lenses fáquicas are an option with good results in the correction of the high myopia(AU)


Assuntos
Humanos , Feminino , Adulto , Lasers de Excimer/uso terapêutico , Lentes Intraoculares Fácicas/estatística & dados numéricos , Miopia/diagnóstico
8.
Rev. cuba. oftalmol ; 30(2): 1-11, abr.-jun. 2017. tab
Artigo em Espanhol | LILACS | ID: biblio-901360

RESUMO

Objetivo: comparar el poder del lente intraocular calculado con las lecturas queratométricas efectivas medidas a tres y cuatro milímetros del Pentacam en miopes con cirugía fotoablativa, con los valores obtenidos por el método de historia clínica y el de Maloney. Métodos: se realizó un estudio descriptivo, de serie de casos, en 50 ojos de 25 pacientes miopes operados con excimer laser, donde se determinó la queratometría mediante el método de historia clínica y el de Maloney. Se compararon con las lecturas queratométricas efectivas a los tres y cuatro milímetros del Pentacam. Se calculó el lente intraocular con las queratometrías obtenidas por los tres métodos anteriores expuestos, por fórmula de Haigis. El análisis estadístico se realizó con la prueba T para datos pareados, con una significación del 95 por ciento. Resultados: el error refractivo preoperatorio promedio fue de -4,71 ± 1,27 dioptrías. El valor queratométrico por el método de historia clínica efectiva fue de 39,64 ± 2,13 dioptrías; por el de Maloney de 39,39 ± 2,40 dioptrías y por el de lecturas queratométricas efectivas a 3 y 4 mm fueron 39,45 ± 2,28 y 39,40 ± 2,08 dioptrías respectivamente. El lente intraocular calculado con la queratometría obtenida por el método de historia clínica, el de Maloney y el de lecturas queratométricas efectivas a 3,0 mm y a 4,0 mm fue 21,91 ± 2,86 dioptrías; 22,24 ± 3,14 dioptrías; 22,16 ± 3,16 dioptrías y 22,23 ± 3,08 dioptrías respectivamente, sin diferencias estadísticas significativas (p> 0,05). Conclusiones: el Pentacam con el Holladay Report aporta poderes corneales que pueden utilizarse para el cálculo del lente intraocular en miopes con cirugía fotoablativa previa(AU)


Objective: to compare the intraocular lens power calculated through effective keratometric readings taken at three and four milimeters away from Pentacam with the values obtained by means of the medical history method and the Maloney´s method in myopic patients with prior photoablative surgery. Methods: case series and descriptive study conducted in 50 eyes from 25 myopic patients operated on with excimer laser, in which keratometry was determined through the medical history method and Maloney´s method and then compared with the effective keratometric readings taken three and four milimeters away from Pentacam. The keratometries obtained through the three above-mentioned methods allowed calculating the intraocular lens power, based on Hagis formula. The statistical analysis was based on paired-T test with 95 percent significance level. Results: average preoperative refractive error was -4.71 ± 1.27 diopters. The effective keratometric value calculated by the medical history method was 39.64 ± 2.13 diopters; by Maloney´s method was 39.39 ± 2.40 and by the effective keratometric readings at three and four mm were 39.45 ± 2.28 y 39.40 ± 2.08 diopters, respectively. The intraocular lens calculated with the medical history method keratometry, the Maloney´s method keratomery and with the effective keratometric readings was 21.91 ± 2.86 diopters; 22.24 ± 3.14 diopters; 22.16 ± 3.16 diopters and 22.23 ± 3.08 diopters, respectively, with no significant statistical difference (p> 0.05). Conclusions: Pentacam along with Holladay Report provide corneal powers that may be used in calculating intraocular lens power in myopic patients after photoablative surgery(AU)


Assuntos
Humanos , Terapia a Laser/métodos , Implante de Lente Intraocular/efeitos adversos , Miopia/cirurgia , Epidemiologia Descritiva , Análise Estatística
9.
Rev. cuba. oftalmol ; 29(4): 712-720, oct.-dic. 2016. ilus
Artigo em Espanhol | LILACS | ID: biblio-845055

RESUMO

La emergencia de las lentes intraoculares fáquicas en las pasadas décadas mostró una nueva alternativa para las ametropías extremas. Desde el año 1950 han sido diseñados diferentes modelos de lentes intraoculares fáquicas con distintos diseños y complicaciones. Se presenta un caso con antecedente de miopía elevada, quien posterior a la colocación de una lente intraocular fáquica de cámara anterior de fijación angular presentó como complicación en el posoperatorio abundante pigmentación iridiana sobre el lente y sinequias anteriores en 360 grados. Nos motivamos a publicar este caso y de esta forma proporcionar una actualización sobre las complicaciones de la colocación de estos lentes, así como ofrecer algunas recomendaciones para detectar a tiempo los posibles riesgos de este procedimiento(AU)


The emergence of the phakic intraocular lenses in the last decades showed a new alternative for the extreme ametropias. Since1950 different models of phakic intraoduclar lenses have been designed with different designs and complications. Here is a patient with a history of high myopia who, after having undergone the implantation of an anterior chamber phakic intraocular lens with angle fixation, presented with abundant iridian pigmentation over the lens and anterior sinechia at 360 degrees. The objectives of this report were to provide an update on the complications of the implantation of these lenses as well as making some recommendations to timely detect the possible risks of this procedure(AU)


Assuntos
Humanos , Feminino , Adulto , Câmara Anterior/lesões , Biometria/instrumentação , Lentes Intraoculares/efeitos adversos , Miopia/diagnóstico , Erros de Refração/complicações , Complicações Pós-Operatórias
10.
Rev. Soc. Colomb. Oftalmol ; 49(4): 262-267, 2016. tab.
Artigo em Espanhol | LILACS, COLNAL | ID: biblio-905177

RESUMO

Purpose: To determine the predictability of postoperative ocular spherical aberration (Z 4,0) based on postoperative corneal asphericity (Q value) in patients with myopic astigmatism. Design: Case series, retrospective. Methods: Wavefront-guided laser in situ keratomileusis (LASIK) was performed in 40 eyes of 23 patients using the Schwind Esiris Excimer Laser. Patients were evaluated preoperatively and 3 months postoperatively. Spherical aberration was measured with a COAS Shack-Hartmann wavefront sensor, and determined for a 6 mm analysis diameter zone. Corneal asphericity was measured with the Orbscan II topographer. Correlation and linear regression analysis was performed. A P value less than 0.05 was considered statistically significant. Results: Treated eyes had a mean manifest spherical error of ­2.98 + 1.36 Diopters (D), and a mean manifest astigmatic error of 0.52 + 0.46 D. The mean Q was -0.30 + 0.13 preoperatively and +0.03 + 0.22 postoperatively. The mean spherical aberration was 0.054 + 0.109 microns preoperatively and 0.262 + 0.135 microns postoperatively. We found a positive statistically signifi cant correlation between postoperative Q value and postoperative spherical aberration (r=0.367) (P=0.02). The postoperative Q value showed a low correlation with postoperative spherical aberration (R2=0.14). Conclusions: There was an increase in corneal asphericity and spherical aberration after surgery. Postoperative corneal asphericity is mildly associated with postoperative spherical aberration. Predictability of postoperative spherical aberration in terms of correlation with postoperative Q value was poor, suggesting that corneal asphericity is not a major predictor of spherical aberration induction.


Assuntos
Miopia , Astigmatismo , Terapia a Laser , Procedimentos Cirúrgicos Oftalmológicos
11.
Rev. Soc. Colomb. Oftalmol ; 49(3): 224-230, 2016. ilus. graf.
Artigo em Espanhol | LILACS, COLNAL | ID: biblio-906973

RESUMO

Objetivo: Describir el caso clínico de una paciente con síndrome de Straatsma asociado con agujero macular lamelar. Métodos: Reporte de caso. Resultados: Reportamos un caso de una paciente de 17 años de edad con hallazgos de mielinización de capa de fibras nerviosas en el ojo izquierdo, asociado a miopía y ambliopía, lo cual conforma el síndrome de Straatsma. Además, la paciente presenta agujero macular lamelar, una rara asociación con este síndrome. Conclusión: El síndrome de Straatsma es una patología rara, caracterizada por la presencia de mielinizacion de capa de fibras nerviosas, miopía y ambliopía; el cual puede estar asociado a otro tipo de complicaciones retinianas como oclusiones vasculares, membranas epirretinianas, agujeros maculares de espesor total y lamelares, las cuales pueden llevar a empeoramiento de la visión.


Objective: To describe the clinical case of a patient with Straatsma syndrome associated with a macular lamellar hole. Methods: Case report. Results: We report a case of a 17-year-old female patient with findings of myelinization retinal nerve fibers in the left eye, associated with myopia and amblyopia, which forms the Straatsma syndrome. In addition, the patient has a macular lamellar hole, a rare association with this syndrome. Conclusion: Straatsma syndrome is a rare pathology, characterized by the presence of myelinization of nerve fiber layer, myopia and amblyopia; which may be associated with other types of retinal complications such as vascular occlusions, epiretinal membranes, macular and lamellar holes, which can lead to worsening of vision.


Assuntos
Miopia , Ambliopia , Oftalmopatias , Perfurações Retinianas
12.
Arq. bras. oftalmol ; 78(5): 286-289, Sep.-Oct. 2015. tab, ilus
Artigo em Inglês | LILACS | ID: lil-761526

RESUMO

ABSTRACTPurpose:To evaluate the outcomes and complications following phacoemulsification surgery in eyes with cataract and high myopia.Methods:We retrospectively evaluated the data of 43 eyes of 28 consecutive patients (12 males, 16 females) with cataract and high myopia who had undergone phacoemulsification and intraocular lens (IOL) implantation. The mean [± standard deviation (range)] age of the patients was 59.20 ± 11.08 (39-77) years.Results:The frequency of nuclear cataract was significantly higher than that of other cataract types (P=0.003). The mean axial length was 28.97 ± 1.99 (26-33) mm and the mean IOL power was 5.09 ± 4.78 (-3.0 to +14.0) diopters (D). The mean preoperative spherical equivalent (SE) was -16.48 ± 5.23 (-8.00 to -25.00) D and the mean postoperative SE was -1.46 ± 0.93 (0.00 to -3.00) D (P=0.00). The mean preoperative best-corrected visual acuity (BCVA) was 0.91 ± 0.37 (0.30 to -1.50) logMAR and the mean postoperative BCVA was 0.29 ± 0.25 (0.00-1.00) logMAR (P=0.00). Twenty-two eyes (51.2%) achieved the target postoperative refraction (±1.0 D). The eyes were divided into 3 groups according to the axial length. The mean biometric error was significantly higher in the group with the greatest axial length than in the other groups (P=0.007). Preoperative argon laser photocoagulation was performed in 7 eyes (16%) on account of retinal tears, retinal holes, or lattice degeneration. Postoperatively, retinal tears developed in 2 eyes (4%) and were treated with photocoagulation. One eye (2%) developed retinal detachment postoperatively, with the patient consequently referred for retinal surgery. Postoperatively, posterior capsule opacities developed in 11 eyes (25%), with all cases treated by laser capsulotomy.Conclusions:Good postoperative outcomes following phacoemulsification surgery were observed in patients with cataract and high myopia. However, clinicians should be aware of the risk of postoperative retinal tears and rhegmatogenous retinal detachment. Preoperative prophylactic argon laser photocoagulation treatment should be considered where necessary.


RESUMOObjetivo:Avaliação dos resultados e complicações associadas à cirurgia de facoemulsificação em olhos com catarata e miopia alta.Método:Quarenta e três olhos de 28 pacientes (12 homens, 16 mulheres) consecutivos com catarata e alta miopia, que haviam sido submetidos a facoemulsificação e implante de lentes intraoculares (LIO), foram avaliados retrospectivamente. A idade foi de 59,20 ± 11,08, (39-77) anos [média ± desvio padrão, (variação)].Resultados:A frequência de catarata nuclear foi significativamente maior do que os outros tipos (p=0,003). O comprimento axial foi 28,97 ± 1,99, (26-33) mm e o poder da LIO foi 5,09 ± 4,78, (-3,0 a 14,0) dioptrias (D). O equivalente esférico pré-operatório (SE) foi de -16,48 ± 5,23, (-25,00 a -8,00) D e o SE pós-operatório foi -1,46 ± 0,93, (0,00 a -3,00) D, (P=0,00). A melhor acuidade visual corrigida pré-operatória (BCVA) foi de 0,91 ± 0,37, (0,30 -1,50) logMAR e a BCVA pós-operatória foi de 0,29 ± 0,25, (0,00-1,00) logMAR, (P=0,00). Vinte e dois olhos (51,2%) estavam dentro de refração alvo pós-operatória (± 1,0 D). Os olhos foram divididos em três grupos, de acordo com o comprimento axial. O erro biométrico foi significativamente maior no terceiro grupo, em comparação com os outros grupos (p=0,007). Fotocoagulação pré-operatória por laser de argônio foi realizada em 7 olhos (16%) devido a roturas retinianas, buracos de retina ou degeneração látice. No pós-operatório, as roturas da retina ocorreram em dois olhos (4%); tratados com fotocoagulação. Um olho (2%) desenvolveu descolamento de retina no pós-operatório e foi encaminhado para cirurgia de retina. No pós-operatório, opacidades da cápsula posterior ocorreram em 11 olhos (25%) e estes foram tratados com capsulotomia a laser.Conclusões:A cirurgia de facoemulsificação permite bons resultados em pacientes com catarata e miopia alta. No entanto, devemos estar atentos para a possibilidade de roturas da retina pós-operatórias e para o descolamento de retina regmatogênico. Se necessário, devemos usar o tratamento profilático de fotocoagulação a laser antes da cirurgia.


Assuntos
Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Implante de Lente Intraocular/efeitos adversos , Miopia/cirurgia , Facoemulsificação/efeitos adversos , Comprimento Axial do Olho/fisiopatologia , Fotocoagulação a Laser/métodos , Lasers de Gás/uso terapêutico , Implante de Lente Intraocular/métodos , Período Pós-Operatório , Período Pré-Operatório , Facoemulsificação/métodos , Complicações Pós-Operatórias/prevenção & controle , Procedimentos Cirúrgicos Profiláticos/métodos , Estudos Retrospectivos , Descolamento Retiniano/etiologia , Descolamento Retiniano/prevenção & controle , Perfurações Retinianas/etiologia , Perfurações Retinianas/prevenção & controle , Estatísticas não Paramétricas , Resultado do Tratamento , Acuidade Visual
13.
Arq. bras. oftalmol ; 78(3): 180-184, May-Jun/2015. tab
Artigo em Inglês | LILACS | ID: lil-753016

RESUMO

ABSTRACT Purpose: To evaluate the difference in terms of refractive errors and anterior segment parameters between schizophrenic patients and healthy volunteers. Methods: This study compared 70 patients (48 men) who were diagnosed with schizophrenia with a control group of 60 (35 men) who were similar in terms of age, gender, education, and socioeconomic level. Anterior segment examination was performed using a Scheimflug system. Axial length and lens thickness (LT) were measured using optic biometry. The following tests were administered to the psychiatric patient group: Brief Psychiatric Rating Scale (BPRS), Scale for the Assessment of Negative Symptoms (SANS), and Scale for the Assessment of Positive Symptoms (SAPS). Results: Mild myopia was detected in both the schizophrenic and control groups, with no statistically significant difference (p>0.005). Corneal volume (CV), anterior chamber volume (ACV), anterior chamber depth (ACD), and central corneal thickness (CCT) values were lower in the schizophrenic group, and there was a statistically significant between-group difference (p=0.026, p=0.014, p=0.048, and p=0.005, respectively). LT was greater in schizophrenics, and the difference was found to be statistically significant (p=0.006). A statistically significant negative correlation was found between SAPS and cylinder values (p=0.008). The axial eye length, cylinder value, pupil diameter, mean keratometric value, and anterior chamber angle revealed no statistically significant difference between the groups (p>0.05). Conclusion: No statistically significant difference was detected in terms of refraction disorders between schizophrenics and the healthy control group, while some differences in anterior chamber parameters were present. These results demonstrate that schizophrenics may exhibit clinical and structural differences in the eye. .


RESUMO Objetivo: Avaliar se existem diferenças em relação aos erros refracionais e parâmetros do segmento anterior entre pacientes com esquizofrenia e voluntários saudáveis. Métodos: Este estudo comparou 70 pacientes diagnosticados com esquizofrenia (48 homens) com um grupo controle de 60 pacientes, semelhantes em relação à idade, sexo, escolaridade e nível socioeconômico (35 homens). O exame do segmento anterior foi realizado com o sistema Scheimflug; os comprimentos axiais do olho e a espessura do cristalino foram avaliadas por meio de biometria óptica. Os seguintes testes foram aplicados ao grupo de pacientes psiquiátricos: Brief Psychiatric Rating Scale (BPRS), Scale for the Assessment of Negative Symptoms (SANS), e Scale for the Assessment of Positive Symptoms (SAPS). Resultados: Miopia leve foi detectada em ambos os grupos de esquizofrenia e de controle, sem diferença estatisticamente significativa (p>0,005). Volume de córnea (CV), volume da câmara anterior (ACV), profundidade da câmara anterior (ACD) e paquimetria central da córnea (CCT) apresentaram valores menores no grupo de esquizofrênicos e houve diferença estatisticamente significativa entre os dois grupos (p=0,026, p=0,014, p=0,048 e p=0,005, respectivamente). A espessura do cristalino (LT) foi maior em esquizofrênicos e a diferença foi estatisticamente significativa (p=0,006). Foi encontrada uma correlação negativa estatisticamente significativa entre SAPS e os valores cilíndricos (p=0,008). O comprimento axial do olho, o valor do cilindro, o diâmetro pupilar, a ceratometria média e o ângulo da câmara anterior não revelaram nenhuma diferença estatística entre os grupos (p>0,05). Conclusões: Não foi detectada diferença estatisticamente significativa em relação aos transtornos de refração entre os esquizofrênicos e o grupo controle, enquanto algumas diferenças nos parâmetros de câmara anterior estavam presentes. Estes resultados demonstram que esquizofrénicos podem ...


Assuntos
Adulto , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Adulto Jovem , Segmento Anterior do Olho , Biometria/métodos , Erros de Refração , Esquizofrenia , Segmento Anterior do Olho/fisiopatologia , Comprimento Axial do Olho/patologia , Estudos Transversais , Córnea/anatomia & histologia , Cristalino/patologia , Miopia/complicações , Miopia/diagnóstico , Escalas de Graduação Psiquiátrica , Pupila/fisiologia , Erros de Refração/diagnóstico , Erros de Refração/fisiopatologia , Fatores Socioeconômicos , Inquéritos e Questionários , Esquizofrenia/tratamento farmacológico , Esquizofrenia/fisiopatologia , Fatores de Tempo
14.
Arq. bras. oftalmol ; 78(1): 44-46, Jan-Feb/2015. graf
Artigo em Inglês | LILACS | ID: lil-741166

RESUMO

We report a case of a 66-year-old man with a history of high myopia and who was referred for acute decreased visual acuity of the right eye. Fundus examination and optical coherence tomography (OCT) showed a mild epiretinal membrane (ERM) and splitting of retinal layers. Pars plana vitrectomy was performed with intravitreous triamcinolone injection, posterior hyaloid and ERM peeling, and 12% perfluoropropane (C3F8) gas tamponade. After remaining asymptomatic for 17 months, the patient reported a new episode of sudden decreased visual acuity in his right eye, and OCT showed recurrent myopic foveoschisis (MF). He underwent vitrectomy and internal limiting membrane (ILM) peeling. Six months later, the patient’s best corrected visual acuity had improved to 20/25. Optical coherence tomography showed a remarkably improved macular anatomy, with residual traction along the inferotemporal arcade, which was attributed to the vessel stiffness itself. We conclude that removing the internal limiting membrane is a challenging maneuver in myopic foveoschisis, even with staining approaches. Although myopic foveoschisis may be resolved without peeling the internal limiting membrane, its removal should be considered if the condition recurs.


Relatamos caso de um homem de 66 anos, com antecedente de alta miopia, que referiu baixa de acuidade visual aguda no olho direito. O mapeamento de retina e o exame de tomografia de coerência óptica (OCT) mostraram discreta membrana epirretiniana (ERM) e isquise retiniana. Foi realizada vitrectomia via pars plana com injeção intravítrea de triancinolona, retirada da hialóide posterior, peeling da membrana epirretiniana e tamponamento com gás perfluorpropano (C3F8) a 12%. O paciente permaneceu assintomático por 17 meses, quando queixou-se de novo episódio de baixa de acuidade visual súbita no olho direito e o tomografia de coerência óptica mostrou recorrência da isquise miópica. Ele foi submetido a nova vitrectomia com peeling da membrana limitante interna (ILM). Após 6 meses, a acuidade visual corrigida era de 20/25. A tomografia de coerência óptica mostrou melhora importante da anatomia macular, com área de tração residual observada na arcada inferotemporal, que foi atribuída à rigidez do próprio vaso. A retirada da membrana limitante interna é uma manobra desafiadora em olhos alto míopes, mesmo estando corada. A resolução da isquise miópica pode ser atingida sem o peeling da membrana limitante interna, mas sua remoção deve ser considerada em casos de recorrência.


Assuntos
Idoso , Humanos , Masculino , Membrana Epirretiniana/cirurgia , Miopia Degenerativa/cirurgia , Miopia/cirurgia , Injeções Intravítreas , Miopia Degenerativa/diagnóstico , Miopia Degenerativa/tratamento farmacológico , Miopia/diagnóstico , Miopia/tratamento farmacológico , Recidiva , Tomografia de Coerência Óptica , Resultado do Tratamento , Triancinolona/uso terapêutico , Acuidade Visual , Vitrectomia/métodos
15.
Rev. Soc. Colomb. Oftalmol ; 48(1): 32-41, 2015. ilus. graf.
Artigo em Espanhol | LILACS, COLNAL | ID: biblio-947027

RESUMO

La evaluación de los discos ópticos en pacientes miopes suele ser problemática, razón por la cual muchas veces el apoyo en imágenes diagnósticas suele ser de gran ayuda. Se describirán algunos casos clínicos en los cuales la evaluación clínica no fue conclusiva, razón por la cual el apoyo en la tomografía óptica coherente fue determinante. El equipo RS-3000 Nidek ® usa una base normativa, realizada en pacientes miopes con longitudes axiales superiores a 26mm, los resultados suelen ser distintos especialmente en la evaluación del complejo celular ganglionar. Se describen dos casos clínicos en los cuales la evaluación mediante OCT fue de gran importancia.


The evaluation of optical discs in myopic patients is often problematic, this is why diagnostic imaging support is often helpful. In some clinical cases in which the clinical evaluation was inconclusive, the optical coherence tomography, was decisive. The RS-3000 Nidek ® equipment uses a normative database held in myopic patients with axial lengths between 26 to 29 mm, the OCT results are often different especially in the evaluation of ganglion cell complex. We describe two clinical cases in which the evaluation by OCT was of great importance.


Assuntos
Miopia/diagnóstico , Oftalmopatias/diagnóstico , Glaucoma/diagnóstico , Tomografia de Coerência Óptica/métodos
16.
Arq. bras. oftalmol ; 77(2): 103-109, Mar-Apr/2014. graf
Artigo em Inglês | LILACS | ID: lil-716254

RESUMO

Purpose: To compare optical and visual quality of implantable collamer lens (ICL) implantation and femtosecond laser in situ keratomileusis (F-LASIK) for myopia. Methods: The CRX1 adaptive optics visual simulator (Imagine Eyes, Orsay, France) was used to simulate the wavefront aberration pattern after the two surgical procedures for -3-diopter (D) and -6-D myopia. Visual acuity at different contrasts and contrast sensitivities at 10, 20, and 25 cycles/degree (cpd) were measured for 3-mm and 5-mm pupils. The modulation transfer function (MTF) and point spread function (PSF) were calculated for 5-mm pupils. Results: F-LASIK MTF was worse than ICL MTF, which was close to diffraction-limited MTF. ICL cases showed less spread out of PSF than F-LASIK cases. ICL cases showed better visual acuity values than F-LASIK cases for all pupils, contrasts, and myopic treatments (p<0.05). No statistically significant differences were found in contrast sensitivities between ICL and F-LASIK cases with -3-D myopia for both pupils for all evaluated spatial frequencies (p>0.05). For -6-D myopia, however, statistically significant differences in contrast sensitivities were found for both pupils for all evaluated spatial frequencies (p<0.05). Contrast sensitivities were better after ICL implantation than after F-LASIK. Conclusions: ICL implantation and F-LASIK provide good optical and visual quality, although the former provides better outcomes of MTF, PSF, visual acuity, and contrast sensitivity, especially for cases with large refractive errors and pupil sizes. These outcomes are related to the F-LASIK producing larger high-order aberrations. .


Objetivo: Comparar a qualidade óptica e visual da lente implantável de collamer (ICL) e da ceratomileuse in situ com laser de femtosegundo (F-LASIK) na correção de miopia. Métodos: O simulador visual de óptica adaptativa CRX1 (Imagine Eyes, Orsay, França) foi usado para simular o padrão de aberração de frentes de onda, depois de dois procedimentos cirúrgicos: implante de ICL e tratamento F-LASIK para -3 e -6 D. A acuidade visual em diferentes contrastes e sensibilidade ao contraste em 10, 20 e 25 ciclos/grau (cpd) foram medidos para pupilas de 3 e 5 mm. A função de transferência de modulação (MTF) e a função de espalhamento de ponto (PSF) foram calculados para a pupila de 5 mm. Resultados: A MTF do F-LASIK foi pior do que a do ICL, que estava perto da MTF do limite de difração. A ICL apresentou menor espalhamento do PSF do que o F-LASIK. ICL apresentou melhores valores da acuidade visual do que F-LASIK para todas as pupilas, contrastes e tratamentos miópicos (p<0,05). Não foram encontradas diferenças estatisticamente significantes na sensibilidade ao contraste entre ICL e F-LASIK de -3 D, para ambas as pupilas e quaisquer frequências espaciais avaliadas (p>0,05). Por outro lado, para -6 D, diferenças estatisticamente significativas na sensibilidade ao contraste foram encontrados para ambas as pupilas e todas as frequências espaciais avaliadas (p<0,05). Sensibilidade ao contraste foi melhor após o implante da ICL que após o F-LASIK. Conclusões: ICL e F-LASIK proporcionam uma boa qualidade óptica e visual, embora a ICL oferece melhores resultados de MTF, PSF, acuidade visual e sensibilidade ao contraste, especialmente para grandes erros de refração e tamanhos de pupila. Estes resultados estão relacionados ao procedimento F-LASIK que induz maiores aberrações ...


Assuntos
Adulto , Humanos , Adulto Jovem , Ceratomileuse Assistida por Excimer Laser In Situ , Implante de Lente Intraocular , Miopia/cirurgia , Lentes Intraoculares Fácicas , Aberrometria , Acomodação Ocular/fisiologia , Simulação por Computador , Sensibilidades de Contraste/fisiologia , Miopia/fisiopatologia , Resultado do Tratamento , Acuidade Visual/fisiologia
17.
Rev. cuba. oftalmol ; 27(1): 51-61, ene.-mar. 2014. tab
Artigo em Espanhol | LILACS, CUMED | ID: lil-717235

RESUMO

OBJETIVO: comparar las queratometrías obtenidas por el Pentacam en ojos miopes operados con excímer láser y las calculadas a través del método de Maloney, en el Instituto Cubano de Oftalmología "Ramón Pando Ferrer", de enero a marzo de 2013. MÉTODOS: se realizó un estudio prospectivo en 50 ojos de 26 pacientes miopes operados con láser, donde se calculó la queratometría promedio mediante el método de Maloney y se comparó con los valores brindados por el Pentacam: valor queratométrico total central y equivalent K- reading power de los mapas a color, así como el true net power (queratométrico total a 3,0 mm) y las lecturas queratométricas a distintos diámetros del programa Holladay Report. Se compararon las queratometrías preoperatoria media de la historia clínica y la estimada aportada por el Pentacam. El análisis estadístico se realizó con la prueba T para datos pareados, y se utilizó una significación del 95 %. RESULTADOS: no hubo diferencias estadísticas significativas entre las queratometrías del método de Maloney, el equivalent K- reading power y las lecturas de queratometría efectivas a diferentes diámetros. La de 3,0 mm mostró la menor diferencia. El resto de las mediciones difirieron de forma significativa. No se encontraron diferencias entre las queratometrías en el preoperatorio. CONCLUSIONES: el Pentacam aporta poderes corneales que no difirieren estadísticamente de los obtenidos por el método de Maloney en ojos miopes con cirugía fotoablativa previa.


OBJECTIVE: to compare the keratometries taken by Pentacam system in miopic patients operated on with excimer laser refractive surgery and those of Maloney method in the "Ramón Pando Ferrer" Cuban Institute of Ophthalmology from January to March of 2013. METHODS: aprospective study was conducted in 50 eyes from 26 patients operated on with excimer laser. The average keratometry was estimated by Maloney´s method and then compared with the values provided by the Pentacam system in terms of total central keratometric value and equivalent K-reading power of color maps, as well as true net power (total keratometric value at 3,0 mm) and equivalent keratometric readings at different diameters of Holladay Report program. Preoperative average keratometries in the medical history were compared with those estimated by Pentacam. Paired t test and 95 % significance level were used for the statistical analysis. RESULTS: there were no significant statistical differences among the keratometries taken by Maloney method, the equivalent K-reading power and the equivalent keratometric readings at different diameters, being that of 3 mm the more accurate. The rest of the measurements differed in a significant way. There were no differences among the preoperative keratometries. CONCLUSION: Pentacam equipment provides corneal powers that did not statistically differ from the ones obtained by Maloney method in myopic eyes with previous excimer laser surgery.


Assuntos
Análise Estatística , Cirurgia da Córnea a Laser/estatística & dados numéricos , Miopia/cirurgia
18.
Rev. cuba. med. mil ; 43(1): 33-41, ene.-mar. 2014. tab
Artigo em Espanhol | LILACS, CUMED | ID: lil-721299

RESUMO

OBJETIVO: identificar resultados refractivos y las complicaciones tras la corrección de la miopía mediante Lasik. MÉTODOS: se dividieron los 241 ojos que se operaron por Lasik en cuatro grupos según grado de miopía y astigmatismo. Tras un estudio oftalmológico preoperatorio completo y después de ser intervenidos quirúrgicamente, se evaluó la agudeza visual en los miopes y astigmatas, así como las complicaciones, intraoperatorias y posoperatorias durante el primer mes con seguimiento de tres meses. RESULTADOS: se mantuvo la agudeza visual previa corregida y no se detectaron complicaciones graves o irreversibles. CONCLUSIONES: Lasik es una técnica segura y útil para la corrección de la miopía, permite mejorar la agudeza visual espontánea y disminuir la corrección óptica.


OBJECTIVE: identify refractive results and complications following myopia correction by LASIK. METHODS: 241 eyes which had been operated on by LASIK were divided into 4 groups based on the degree of myopia and astigmatism. Patients underwent a complete preoperative ophthalmological study before they were operated on. After surgery, myopic and astigmatic patients were evaluated for visual acuity, as well as intraoperative and postoperative complications during the first month and in a three-month follow-up period. RESULTS: previous corrected visual acuity was preserved and no serious or irreversible complications were detected. CONCLUSIONS: LASIK is a safe myopia correction technique useful to improve spontaneous visual acuity and reduce optical correction.


Assuntos
Humanos , Complicações Pós-Operatórias , Acuidade Visual , Procedimentos Cirúrgicos Refrativos/efeitos adversos , Complicações Intraoperatórias/terapia , Miopia/cirurgia
20.
Rev. Soc. Colomb. Oftalmol ; 47(3): 232-240, 2014. graf.
Artigo em Espanhol | LILACS, COLNAL | ID: biblio-965367

RESUMO

Objetivo: describir la Función de Sensibilidad al Contraste (FSC) en pacientes con miopía, astigmatismo miópico, hipermetropía y astigmatismo hipermetrópico. Diseño del estudio: serie de casos, descriptivo. Métodos: se incluyeron sujetos con miopía, astigmatismo miópico, hipermetropía y astigmatismo hipermetrópico, candidatos para cirugía refractiva y evaluados en la Unidad de Cirugía Refractiva de la Clínica de Oftalmología de Cali, con agudeza visual mejor corregida (AVMC) >=20/20, menores de 50 años de edad y sin antecedente de cirugía refractiva. La función sensibilidad al contraste se midió con el sistema OPTEC® 6500 (Stereo Optical Co, Inc., Chicago, USA) en frecuencias espaciales de 1.5, 3.0, 6.0, 12 y 18 ciclos/grado en condiciones fotópicas (85 cd/m2) y mesópicas (3 cd/m2). Se aplicaron las prueba no paramétrica de Wilcoxon y de Mann-Whitney para comparar diferencias entre la FSC entre los grupos de miopía/astigmatismo miópico e hipermetropía/astigmatismo hipermetrópico en las diferentes frecuencias espaciales. Resultados: se incluyeron 188 ojos de 95 sujetos con miopía y astigmatismo miópico (promedio de edad = 30,6 ± 7,6 años, 51% hombres) y 121 ojos de 64 sujetos con hipermetropía y astigmatismo hipermetrópico (promedio de edad = 43 ± 6,1 años, 62 % mujeres). La sensibilidad al contraste en los pacientes de ambos grupos fue mayor significativamente en condiciones fotópicas que en condiciones mesópicas, excepto en la frecuencia espacial de 3 ciclos/grado del grupo de miopía/astigmatismo miópico. Se encontró diferencia estadísticamente significativa del valor de la FSC entre los grupos de miopía/astigmatismo miópico e hipermetropía/astigmatismo hipermetrópico en condiciones fotópicas en casi todas las frecuencias espaciales, excepto en 3 ciclos/grado y en condiciones mesópicas en las frecuencias espaciales de 1.5, 3 y 6 ciclos/grado. Conclusiones: los valores de FSC son mayores en el grupo de pacientes con miopía y astigmatismo miópico que en los del grupo de hipermetropía y astigmatismo hipermetrópico. Estos valores podrían usarse como referencia en estos grupos de pacientes en nuestra población.


Purpose: to describe the contrast sensitivity function (CSF) in patients with myopia, hyperopia and astigmatism. Study design: descriptive case series study. Methods: subjects with myopia/myopic astigmatism and with hyperopia/hyperopic astigmatism looking for refractive surgery, and evaluated at the Unit of Refractive Surgery in the Clínica de Oftalmología de Cali were included. Their Best Spectacle Corrected Visual Acuity (BSCVA) was >=20/20, age less than 50 years and no previous refractive surgery. The CSF was measured using the OPTEC® 6500 (Stereo Optical Co, Inc, Chicago, USA) system for spatial frequencies 1.5, 3.0, 6.0, 12 and 18 cycles/degree in photopic (85 cd/m2) and mesopic (3 cd/m2) conditions. Statistical analysis was done using the Wilcoxon and Mann-Whitney tests for non-parametric samples, comparing the myopia/myopic astigmatism and the hyperopia /hyperopic astigmatism groups. Results: 188 eyes of 95 subjects with myopia/myopic astigmatism (age = 30,6 ± 7.6 years, 51% men) and 121 eyes of 64 subjects with hyperopia/hyperopic astigmatism (age = 43± 6.1 years, 62% women) were analyzed. The CSF was higher in both groups in photopic conditions except in 3 cycles per degree in myopia/myopic astigmatism group. Significant differences in the CSF were found between the two groups in photopic conditions excluding the 3 cycles per degree. In mesopic conditions diff erences were found for the spatial frequencies 1.5, 3 and 6 cycles per degree. Conclusions: The patients of the myopia/myopic astigmatism group had a contrast sensitivity function higher than those of hyperopia/hyperopic astigmatism group. These values could be used as reference for these patients in our population.


Assuntos
Miopia/epidemiologia , Astigmatismo/epidemiologia , Oftalmopatias/etiologia , Hiperopia/epidemiologia
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