Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 10 de 10
Filtrar
Más filtros












Base de datos
Intervalo de año de publicación
1.
Arch Soc Esp Oftalmol (Engl Ed) ; 97(7): 409-412, 2022 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-35779897

RESUMEN

Intravascular papillary endothelial hyperplasia (IPEH) is characterized by proliferation of endothelial cells usually occurring within a long-standing vascular malformation or tumor. IPEH usually affects neck, head and lower extremities, and few orbital and eyelid cases have been reported. We present a unique case, a 48-years-old man with a purple, elevated, multilobular conjunctival lesion of three-weeks duration that underwent an excisional biopsy. Pathological features revealed intravascular papillary endothelial hyperplasia (Masson's tumor).


Asunto(s)
Neoplasias Vasculares , Conjuntiva/patología , Células Endoteliales/patología , Párpados/patología , Humanos , Hiperplasia/patología , Masculino , Persona de Mediana Edad , Neoplasias Vasculares/patología
2.
Arch Soc Esp Oftalmol (Engl Ed) ; 96(8): 401-407, 2021 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-34340777

RESUMEN

PURPOSE: To report, for the first time, the clinical outcomes and patient satisfaction of laser refractive surgery performed by a trainee during a corneal and refractive surgery fellowship program in Latin America. METHODS: This prospective and interventionist study reviewed the clinical charts of the first 100 consecutive refractive surgery cases performed by a single Cornea Fellowship trainee between March 2018 and June 2018 in the Blindness Prevention Association of Mexico (Asociación para Evitar la Ceguera en Mexico). Femtosecond LASIK was performed in all eyes. Visual and refractive outcomes were evaluated during the first year of follow-up. Patient satisfaction was measured using 5 author-created questions 6 months after surgery. RESULTS: Data of 100 eyes of 50 consecutive patients were evaluated. One year after the surgery, mean uncorrected distance visual acuity (UDVA) was 0.01 logMAR. Spherical equivalent error passed from -3.91 ± 2.28 D preoperatively to -0.22 ± 0.28 D. No eyes lost lines in corrected distance visual acuity (CDVA). Manifest refraction maintained stable during the first year after surgery. The five author-created questions revealed a high level of confidence and patient satisfaction. CONCLUSIONS: Femto-LASIK performed by a corneal and refractive surgery fellowship trainee showed good refractive and visual outcomes, as well as high patient satisfaction and confidence in a refractive surgery centre in Latin America.


Asunto(s)
Becas , Queratomileusis por Láser In Situ , Miopía , Humanos , Queratomileusis por Láser In Situ/educación , Láseres de Excímeros , Miopía/cirugía , Satisfacción del Paciente , Estudios Prospectivos , Resultado del Tratamiento
4.
Arch Soc Esp Oftalmol ; 89(8): 308-12, 2014 Aug.
Artículo en Inglés, Español | MEDLINE | ID: mdl-24951326

RESUMEN

OBJECTIVE: To evaluate the differences in stromal corneal nerves between normal patients and keratoconus patients. MATERIAL AND METHODS: A total of 140 eyes of 70 normal patients (group A) and 122 eyes of 87 keratoconus patients (group B) were examined with the confocal microscope, with a central scan of the total corneal thickness being taken. The morphology and thickness of the corneal stromal nerves were evaluated by using the Navis v. 3.5.0. software. Nerve thickness was obtained from the mean between the widest and the narrowest portions of each stromal nerve. RESULTS: Corneal stromal nerves were observed as irregular linear hyper-reflective structures with wide and narrow portions in all cases. Mean corneal stromal nerves thickness in group A was 5.7±1.7 (range from 3.3 to 10.4 µ), mean corneal stromal nerves thickness in group B was 7.2±1.9 (range from 3.5 to 12.0 µ). There was a statistical significant difference (P<.05) in stromal corneal nerves thickness between group A and group B. CONCLUSION: Stromal corneal nerves morphology was similar in both groups, but stromal nerves were thicker in keratoconus patients.


Asunto(s)
Sustancia Propia/inervación , Sustancia Propia/patología , Queratocono/patología , Microscopía Confocal , Humanos
5.
Arch Soc Esp Oftalmol ; 89(1): 22-6, 2014 Jan.
Artículo en Español | MEDLINE | ID: mdl-24332688

RESUMEN

INTRODUCTION: Pars planitis (PP) is a form of intermediate uveitis that manifests with several posterior segment complications, including cystoid macular edema (CME) and epiretinal membrane formation (ERM). On the presence of CME the patient is usually treated with anti-inflammatory and/or immunosuppressive drugs. However the presence of CME may coexist with ERM formation, and therefore the treatment could be different. PURPOSE: To determine the association between ERM and CME in PP. MATERIALS AND METHODS: Case control series. The charts of patients diagnosed with PP were retrospectively reviewed. All patients had fluorescein angiogram (FA) and spectral domain optical coherence tomography (SD-OCT). Presence of ERM was determined by SD-OCT, while CME was determined by FA. Contingency tables were used to determine the risk of developing CME with ERM. RESULTS: 31 eyes presented ERM. 16 eyes presented CME. Relative risk to have CME and ERM was 0.971, with a P value of 0.77 (χ(2)). CONCLUSIONS: There is no association between ERM formation and the development of CME. There is no evidence to suggest a surgical approach as first line of treatment with the presence of ERM in PP.


Asunto(s)
Membrana Epirretinal/etiología , Edema Macular/etiología , Pars Planitis/complicaciones , Adolescente , Adulto , Estudios de Casos y Controles , Niño , Membrana Epirretinal/patología , Femenino , Angiografía con Fluoresceína , Fóvea Central/patología , Humanos , Edema Macular/patología , Masculino , Pars Planitis/patología , Estudios Retrospectivos , Riesgo , Tomografía de Coherencia Óptica , Adulto Joven
6.
Arch Soc Esp Oftalmol ; 88(5): 179-83, 2013 May.
Artículo en Inglés, Español | MEDLINE | ID: mdl-23623018

RESUMEN

OBJECTIVE: To determine the effects of in vivo cross-linking treatment of the cornea. METHODS: Eighteen eyes of eighteen keratoconus patients underwent cross-linking treatment using a 0.1% riboflavin solution and ultraviolet A radiation at 370 nm at 3 mW/cm² for 30 minutes. In vivo confocal microscopy was performed before, and at 1 week and 1 month after treatment. RESULTS: At 1 week after treatment, keratocyte activation and collagen fiber organization showed as hyper-reflective structures and were observed from the first sub-epithelial image to a corneal stromal depth of 275.1 ± 85.9 µm. At 1 month after treatment, activated keratocytes and fiber organization were also observed from the first sub-epithelial image to a corneal stromal depth of 324.9 ± 66.0 µm. The deepest hyper-reflective structures at 1 month showed as thick, linear-shaped hyper-reflective structures. CONCLUSION: In vivo confocal microscopy in humans showed corneal stromal changes at 1 week and 1 month after cross-linking treatment, in some cases at depths in excess of 300 µm.


Asunto(s)
Reactivos de Enlaces Cruzados/uso terapéutico , Queratocono/terapia , Microscopía Confocal , Fármacos Fotosensibilizantes/uso terapéutico , Riboflavina/uso terapéutico , Terapia Ultravioleta , Adulto , Terapia Combinada , Sustancia Propia/efectos de los fármacos , Sustancia Propia/efectos de la radiación , Humanos , Adulto Joven
7.
Ophthalmology ; 108(8): 1415-22, 2001 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-11470692

RESUMEN

OBJECTIVE: To determine the frequency of changes in posterior corneal surface after laser in situ keratomileusis (LASIK) and photorefractive keratectomy (PRK). DESIGN: Nonrandomized, comparative trial. PARTICIPANTS: Ninety-five eyes (71 patients) that underwent PRK (n = 45) or LASIK (n = 50). CONTROLS: Twenty nonsurgery eyes were used to validate the method of analysis of the posterior corneal curvature (PCC). Seventy nonsurgery eyes were used for comparisons. METHODS: Float, apex-fixed best fit corneal curvature (ABC), and posterior elevation difference were evaluated in 20 elevation topography maps at 6 zone diameters (3-7 and 10 mm) and at two time points. Corneal elevation maps before and after PRK or LASIK were analyzed by the ABC and float methods and compared with a nonsurgery group. MAIN OUTCOME MEASURES: Posterior corneal curvature change (mm) was classified as flattening, steepening, or no change. RESULTS: Flattening of more than 0.12 mm was found in 22.2% of eyes (n = 10) in the PRK group, a change of +/-0.12 mm was found in 53.3% of eyes (n = 24), and steepening of more than 0.12 mm was found in 24.4% of eyes (n = 11) using the float method and in 28.9% of eyes (n = 13), 35.6% of eyes (n = 16), and 35.6% eyes (n = 16), respectively, using the ABC method. In the LASIK group, the float method registered flattening in 20% of eyes (n = 10), no change in 52% of eyes (n = 26), and steepening in 28% of eyes (n = 14), whereas the ABC method registered flattening in 30% of eyes (n = 15), no change in 40% of eyes (n = 20), and steepening in 30% of eyes (n = 15). The nonsurgery group showed a similar change in PCC at two different time points similar to that of the PRK and the LASIK groups. CONCLUSIONS: The differences observed in the PCC after PRK or LASIK were not statistically significantly different from those observed over time in the nonsurgery control group.


Asunto(s)
Cámara Anterior/patología , Córnea/cirugía , Topografía de la Córnea , Queratomileusis por Láser In Situ , Miopía/cirugía , Queratectomía Fotorrefractiva , Adulto , Femenino , Humanos , Láseres de Excímeros , Masculino
8.
Ophthalmology ; 105(4): 631-6, 1998 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-9544636

RESUMEN

OBJECTIVE: This study aimed to describe the morphology of cystic disorders of the corneal epithelium by confocal microscopy. DESIGN: The study design was a prospective evaluation of confocal microscopic images of patients with cystic corneal disorders. PARTICIPANTS: Thirteen patients (19 eyes) were included. The corneal disorders included four patients with corneal decompensation (Fuchs' dystrophy), five patients with epithelial basement membrane dystrophy (e.g., Cogan's microcystic and map-dot dystrophies), one patient with Meesmann's dystrophy, and three patients with recurrent erosion syndrome of unknown etiology. Confocal images of diseased corneas were compared with those of ten normal control eyes (ten subjects). INTERVENTION: All patients were examined by slit-lamp biomicroscopic analysis and confocal microscopic analysis (Tomey, Erlangen-Temmenlohe, Germany). Image analysis was used to identify the corneal epithelial structures correlated with the corresponding pathology. MAIN OUTCOMES MEASURES: Confocal microscopy was used to assess the size, shape, light scatter, and reflection of the cysts. RESULTS: Slit-lamp examination results showed corneal epithelial cystic lesions in all cases. Confocal microscopy was able to identify cystic lesions in 9 (69.2%) of 13 patients. Of the four patients in whom lesions could not be found by confocal microscopy, three had recurrent erosion syndrome and the other one had epithelial basement membrane dystrophy. The confocal images were compatible with the clinical and histologic pictures of the disease. Normal control eyes did not show any epithelial lesion, either by biomicroscopy or confocal microscopy. CONCLUSIONS: Confocal microscopy provides an in vivo evaluation of cystic epithelial corneal lesions. This study shows that confocal microscopy is suitable for examining cystic lesions of the corneal epithelium. Nevertheless, it is not as sensitive as biomicroscopy in detecting cystic lesions in certain corneal conditions.


Asunto(s)
Enfermedades de la Córnea/patología , Quistes/patología , Epitelio Corneal/patología , Microscopía Confocal , Humanos , Procesamiento de Imagen Asistido por Computador , Estudios Prospectivos
9.
J Fr Ophtalmol ; 20(8): 611-3, 1997.
Artículo en Francés | MEDLINE | ID: mdl-9515121

RESUMEN

Two cases of bilateral Thygeson's keratitis were examined by in vivo confocal microscopy. In the corneas, fine deposits of highly reflected material appeared immediately below the basal lamina. This is the first time that such morphological features are described in patients with Thygeson's keratitis.


Asunto(s)
Queratitis/diagnóstico , Adolescente , Adulto , Femenino , Humanos , Masculino , Microscopía Confocal , Reproducibilidad de los Resultados
10.
Retina ; 14(1): 6-9, 1994.
Artículo en Inglés | MEDLINE | ID: mdl-8016465

RESUMEN

PURPOSE: Multiple, bilateral areas of congenital hypertrophy of the retinal pigment epithelium (CHRPE) have been described in association with familial adenomatous polyposis (FAP). Histopathologic findings have suggested a generalized effect of the FAP gene on the RPE, which could impair the functional integrity of the RPE. The clinical, psychophysical, electrophysiologic, and fluorescein angiographic findings in CHRPE in subjects with FAP were assessed. METHODS: RPE function was assessed in 7 subjects with CHRPE and a family history of FAP. Four had documented FAP (mean age = 22.25 years) and the other three were siblings of affected subjects, with a 50% risk of developing FAP (mean age = 6.33 years). All subjects underwent comprehensive ophthalmologic examination. RESULTS: All subjects showed mild hyperopia (mean, +1.13 D; best corrected visual acuity, 20/20 or better). On perimetry, there were scotomas corresponding to some lesions. ERG showed normal rod, maximal, single-flash cone, and flicker responses. Light-dark ratio was within the normal range on EOG. Fluorescein angiography demonstrated normal retinal vasculature overlying the CHRPE lesions, which blocked background choroidal fluorescence. A normal choriocapillaris was observed through some hypopigmented lacuna. CONCLUSION: CHRPE has been related to generalized expression of an abnormal gene in RPE, but its functional abnormalities tend to be localized.


Asunto(s)
Poliposis Adenomatosa del Colon/genética , Epitelio Pigmentado Ocular/patología , Poliposis Adenomatosa del Colon/complicaciones , Poliposis Adenomatosa del Colon/fisiopatología , Adulto , Biomarcadores , Niño , Electrooculografía , Electrorretinografía , Femenino , Humanos , Hipertrofia/congénito , Masculino , Linaje , Epitelio Pigmentado Ocular/fisiopatología , Agudeza Visual
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA
...