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1.
Vestn Oftalmol ; 137(2): 84-88, 2021.
Artículo en Ruso | MEDLINE | ID: mdl-33881267

RESUMEN

The rising number of cases requiring intraocular lens (IOL) exchange, including those for refractive reasons, drives the search for methods to minimize the trauma of the procedure. Lens implants with modular optics may lower complication risks. PURPOSE: To test the use of modular IOL on a laboratory animal in an experiment. MATERIAL AND METHODS: A novel modular IOL was implanted into rabbit eyes in disjointed form with subsequent intraocular assembling. Presence of long-term side effects of implantation and possibility of atraumatic optical disk exchange were evaluated 4 months after the surgery. RESULTS: A total of 3 rabbit eyes underwent IOL implantation surgery, no technical difficulties were encountered. Postoperatively two eyes were quiet with proper central IOL position and no deformations in the haptic and optical parts. Epithelial cell proliferations did not hinder intraocular disassembly/assembly of the modular IOL. Optical disk spontaneously dislocated into anterior chamber in one eye, with subsequent chronic inflammation and corneal edema. In the late postoperative period, no difficulties were observed in disconnecting the optical part from the haptic ring and their coupling. Optical disk exchange did not require extensive handling of the haptic, except that of fixation leaflets during release/capture of the optics. Mechanical impact of the procedure on the lens capsule and Zinn's zonule fibers was minimal. CONCLUSION: The experiment has validated the functionality and feasibility of the modular IOL principle designed to lower the threshold for decisions on IOL exchange in postoperative correction of clinical refraction. In most cases, rabbit eyes were demonstrated to exhibit long-term stable fixation, relative ease and safety of optical disk exchange eliminating the need for traumatic capsular bag manipulations.


Asunto(s)
Cápsula del Cristalino , Lentes Intraoculares , Facoemulsificación , Animales , Cámara Anterior/cirugía , Ojo Artificial , Humanos , Implantación de Lentes Intraoculares/efectos adversos , Lentes Intraoculares/efectos adversos , Complicaciones Posoperatorias , Conejos
2.
BMC Ophthalmol ; 21(1): 126, 2021 Mar 08.
Artículo en Inglés | MEDLINE | ID: mdl-33685428

RESUMEN

BACKGROUND: Glistenings describe small, refractile microvacuoles that may arise within the intraocular lens (IOL) material and reduce the patients' quality of vision. Lenses composed of hydrophobic acrylic material are particularly affected by glistening formation. In this study, we compared the tendency of glistening formation in six different types of hydrophobic acrylic intraocular lenses (IOLs). METHODS: We used a well-established accelerated laboratory method to develop glistenings in the following IOLs: Vivinex XY1 (Hoya), AcrySof SN60WF (Alcon), Tecnis ZCB00 (AMO), Avansee PN6A (Kowa), Aktis SP NS-60YG (Nidek), and CT Lucia 601P (Zeiss). IOLs were first immersed in saline at 45 °C for 24 h and then at 37 °C for 2.5 h in a water bath. Microvacuole (MV) density and size (Miyata grading) were documented and calculated using an image analysis program. RESULTS: The mean glistening density [MV/mm2] and mean Miyata grading (in brackets) were: Vivinex: 11.6 ± 5.7 (0), SN60WF: 264.4 ± 110.3 (2.6), Tecnis: 6.0 ± 2.8 (0), Avansee: 2.2 ± 0.7 (0), Aktis: 851.4 ± 59.4 (3+) and CT Lucia: 71.0 ± 71.6 (1). CONCLUSIONS: While all tested IOLs showed glistenings with the accelerated laboratory method, the Aktis and SN60WF showed the highest microvacuole density, followed by the CT Lucia. In comparison, the Vivinex, Tecnis, and Avansee IOLs showed far fewer number of glistenings.


Asunto(s)
Resinas Acrílicas , Lentes Intraoculares , Ojo Artificial , Humanos , Interacciones Hidrofóbicas e Hidrofílicas
3.
Arch. Soc. Esp. Oftalmol ; 96(1): 52-55, ene. 2021. ilus
Artículo en Español | IBECS | ID: ibc-200186

RESUMEN

Niño de tres meses diagnosticado de microftalmia y quistes orbitarios bilaterales. En la resonancia magnética se objetivó una microftalmia bilateral con quiste moderado en ojo derecho (OD) y quiste severo en ojo izquierdo. La exploración sugería un posible potencial visual del OD. Se decidió solo observación. A los dos años, la exploración mostraba una disminución significativa de los quistes con una agudeza visual de movimiento de manos gracias a la visión residual del OD. La microftalmia con quistes orbitarios es una anomalía congénita rara. Los quistes tienden a crecer con el tiempo. Actualmente no existe un protocolo estandarizado de manejo de esta enfermedad. A diferencia de nuestro caso, la agudeza visual en estos pacientes es normalmente de no percepción de la luz. La observación puede ser una alternativa terapéutica en casos severos ya que existe la posibilidad de una disminución, desplazamiento o regresión espontánea de los quistes


The case is presented of a 3-month-old infant diagnosed with microphthalmos and orbital cysts. Magnetic Resonance Imaging revealed a bilateral microphthalmia with a moderate right cyst and a severe left cyst. Visual potential of the right eye was uncertain. Non-surgical treatment was decided. At the age of 2 years old, physical examination showed a significant decrease of the cysts and visual acuity of hand movements due to the residual vision of his right eye. Microphthalmos with orbital cyst is a rare congenital anomaly. Cysts tend to enlarge with time. At the moment, no standard protocol for the management of this pathology has been described. Unlike in our patient, visual acuity in these patients is usually of no-light perception. The observation could be an alternative in severe cases, since there is a possibility of spontaneous reduction, displacement, or regression of the cysts


Asunto(s)
Humanos , Masculino , Lactante , Quistes/complicaciones , Enfermedades Orbitales/complicaciones , Microftalmía/diagnóstico por imagen , Ojo Artificial , Quistes/patología , Microftalmía/patología , Enfermedades Orbitales/patología , Espectroscopía de Resonancia Magnética , Agudeza Visual , Fondo de Ojo , Diagnóstico Diferencial
4.
Photodiagnosis Photodyn Ther ; 32: 102042, 2020 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-33321571

RESUMEN

BACKGROUND: Photodynamic therapy (PDT) is a treatment for the specific control of oral biofilms. However, its effects on maxillofacial prostheses have been barely explored. In this study, we evaluated the antimicrobial effect of PDT using methylene blue (MB) and laser against a Staphylococcus aureus biofilm developed on the surface of scleral acrylic resin. METHODS: Sixty-six specimens of acrylic resin designed for ocular prostheses were fabricated in a disk-shaped format (3 × 10 mm). S. aureus biofilm was grown on the surface of the specimens for 24 h and the disks were then treated with MB at different concentrations (25, 50, 75 or 100 µg/mL), with or without PDT (GaAlAs diode laser; 660 nm; 100 mW; 9 J; 321.4 J.cm-2; 3.5 W.cm-2 and 90 s). Control groups were treated with 2% chlorhexidine gluconate (CHX) or phosphate buffered saline. After the treatments, colony forming units (CFU) were counted and the samples were qualitatively evaluated by scanning electron microscopy (SEM). Data were analyzed descriptively and by nested ANOVA and the Tukey test (α = .05). RESULTS: PDT groups with MB concentrations at 75 and 100 µg/mL formed fewer CFU compared to the other groups (P < 0.001) and the 2% CHX group did not form any CFU. SEM images revealed that the surface of the polymers in these groups did not show bacterial colonies. CONCLUSIONS: PDT significantly reduced S. aureus biofilm in the scleral acrylic resin when associated with an MB dilution of 75 µg/mL or higher. Thus, PDT can be a promising candidate for disinfecting ocular prostheses.


Asunto(s)
Antiinfecciosos , Fotoquimioterapia , Staphylococcus aureus , Resinas Acrílicas , Biopelículas , Ojo Artificial , Fotoquimioterapia/métodos , Fármacos Fotosensibilizantes/farmacología
5.
J Contemp Dent Pract ; 21(7): 815-818, 2020 Jul 01.
Artículo en Inglés | MEDLINE | ID: mdl-33020369

RESUMEN

AIM: An apparatus named "laser pointer apparatus" is proposed for accurate iris positioning in a prosthetic eye. BACKGROUND: Loss of an eye leads to significant psychological stress due to functional disability and societal response to the facial disablement. Custom-made eye prosthesis is a good option to rehabilitate such defects. Inaccurately positioned iris in a prosthetic eye results in squint eye appearance leading to poor esthetics and poor psychological impact among such unfortunate patients. TECHNIQUE: A new apparatus called a laser pointer apparatus, which is an assembly of an occlusal plane analyzer, web camera, laser pointer, and software, has been introduced for iris positioning in a prosthetic eye. CONCLUSION: Iris positioning is one of the key steps in fabricating an eye prosthesis. Laser pointer apparatus is a reliable method for iris positioning in a prosthetic eye. CLINICAL SIGNIFICANCE: Positioning the iris to the ideal symmetrical position is a cardinal step in the fabrication of an ocular prosthesis. This article aims to introduce a "laser pointer apparatus" to orient iris in a prosthetic eye objectively to overcome the subjective errors.


Asunto(s)
Estética Dental , Ojo Artificial , Humanos , Iris/cirugía , Diseño de Prótesis
6.
Vestn Oftalmol ; 136(5. Vyp. 2): 237-240, 2020.
Artículo en Ruso | MEDLINE | ID: mdl-33063971

RESUMEN

The authors present a clinical case of central opacification of the intraocular lens (IOL) optic associated with a significant uncorrectable visual acuity decrease. Due to high surgical risks of IOL exchange, corectopia was achieved through sectoral laser photomydriasis. Stable dilation of the lower nasal sector of the pupil enabled the optical zone to be shifted outside the opaque area of the IOL. As shown by the perimetry results, the visual field borders enlarged through sectoral laser photomydriasis were comparable with the topography of the asymmetrically dilated pupil.


Asunto(s)
Lentes Intraoculares , Falla de Prótesis , Ojo Artificial , Humanos , Óptica y Fotónica , Agudeza Visual
7.
Vestn Oftalmol ; 136(5. Vyp. 2): 248-253, 2020.
Artículo en Ruso | MEDLINE | ID: mdl-33063973

RESUMEN

The review presents the history of development and improvement of methods for intraocular lens (IOL) exchange. Existing techniques of IOL exchange are comparatively analyzed.


Asunto(s)
Implantación de Lentes Intraoculares , Lentes Intraoculares , Ojo Artificial , Estudios Retrospectivos , Agudeza Visual
8.
Vestn Oftalmol ; 136(5. Vyp. 2): 254-259, 2020.
Artículo en Ruso | MEDLINE | ID: mdl-33063974

RESUMEN

The review discusses modern problems of intraocular lens (IOL) exchange. Making an adequate choice between IOL reposition and IOL exchange in pseudophakic patients with problems of lens fixation remains a largely unsolved issue. The literature data shows a noticeable increase in the number of supporters of retropupillary fixation of an iris-claw lens during the exchange procedure.


Asunto(s)
Implantación de Lentes Intraoculares , Lentes Intraoculares , Ojo Artificial , Humanos , Iris , Agudeza Visual
9.
Cir. pediátr ; 33(4): 204-208, oct. 2020. ilus
Artículo en Español | IBECS | ID: ibc-195133

RESUMEN

Los neurofibromas plexiformes son una forma de presentación de la neurofibromatosis tipo 1 (NF1) que pueden originar grandes deformaciones faciales. El tratamiento de estas tumoraciones casi nunca es curativo, el abordaje quirúrgico tiene por objetivo mejorar la estética y la función. Requiere un abordaje multidisciplinar y suele necesitar cirugía por etapas. Se presenta el caso de un paciente varón con NF1 que presenta un neurofibroma plexiforme facial periorbitario y malar izquierdo con invasión intra y extraconal de crecimiento lento. Acude con 16 años a la consulta de cirugía plástica para corrección de las deformidades faciales de partes blandas. Se realiza exéresis mediante abordaje por subunidades estéticas, realizando cantopexia y reconstrucción de la cavidad orbitaria, resultando en una simetrización de la región facial. Con ello se obtiene una notable mejoría estética y funcional, facilitando la adaptación de la prótesis ocular. El uso posterior de selumetinib ha permitido estabilizar la lesión


Plexiform neurofibroma is a presentation of neurofibromatosis type 1 (NF1) which can cause great facial deformities. Treatment rarely has a healing effect, so the surgical approach is aimed at improving esthetics and function. It requires a cross-disciplinary approach and typically needs multi-stage surgery. This is the case of a 16-year-old male patient with NF1 presenting with left periorbital and malar facial plexiform neurofibroma with slow-growth intraconal and extraconal invasion. He presented at the plastic surgery consultation for facial soft tissue deformity correction. Removal was performed using an esthetic subunit approach, with canthopexy and orbital cavity reconstruction, resulting in facial region symmetrization. This allowed for remarkable esthetic and functional improvement, facilitating ocular prosthesis adaptation. The subsequent use of selumetinib allowed the lesion to be stabilized


Asunto(s)
Humanos , Masculino , Adolescente , Neurofibroma Plexiforme/diagnóstico por imagen , Neurofibroma Plexiforme/cirugía , Cara/cirugía , Ojo Artificial , Cara/diagnóstico por imagen , Cara/patología , Tomografía Computarizada por Rayos X , Neurofibromatosis 1/diagnóstico por imagen , Neurofibromatosis 1/cirugía
10.
Medicine (Baltimore) ; 99(29): e21338, 2020 Jul 17.
Artículo en Inglés | MEDLINE | ID: mdl-32702931

RESUMEN

Anophthalmic patients not only cause obvious functional deficits and facial deformities, but lead to poor psychological outcomes, although prosthesis wearing can offer improvements in psychological well-being to some extent. The study aimed to comprehensively evaluate the psychological symptoms and analyze related factors in anophthalmic patients wearing ocular prosthesis.Total of 150 anophthalmic patients and 120 control subjects were included in this cross-sectional study. Baseline characteristics survey and the symptom checklist-90 scale were completed by all participants to assess the psychological symptoms and analyze their related factors by multivariate analysis.The anophthalmic patients exhibited the increased levels of somatization, depression, anxiety, and hostility compared with control subjects. The most prominent symptom was hostility with the median score of 1.20. Female patients presented with higher somatization, depression, anxiety, and hostility. Marital status single was positively associated with depression, anxiety, and hostility symptoms. Lower education and cause of enucleation were related to higher levels of hostility.Anophthalmic patients wearing ocular prosthesis presented with more prominent hostility and somatization besides its higher depression and anxiety symptoms. The findings suggest that for female single anophthalmic patients with low education, especially caused by trauma, timely psychological assessment and intervention should be provided to avoid undesirable consequences.


Asunto(s)
Anoftalmos/psicología , Ojo Artificial/psicología , Adulto , Anoftalmos/complicaciones , Ansiedad/epidemiología , Ansiedad/etiología , Estudios de Casos y Controles , Estudios Transversales , Depresión/epidemiología , Depresión/etiología , Femenino , Humanos , Masculino , Estado Civil , Persona de Mediana Edad , Factores de Riesgo , Trastornos Somatomorfos/epidemiología , Trastornos Somatomorfos/etiología , Encuestas y Cuestionarios , Adulto Joven
11.
PLoS One ; 15(6): e0234380, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32542032

RESUMEN

It is well-known that correction of blur can improve visual perception. However, it is unclear how the beneficial effect of correction is affected by the regions of correction and the spatial uncertainty introduced by the retinal stimulation. The purpose of this study was two-fold: first, to compare the impacts of blur correction between isoeccentric locations of the visual field; and second, to evaluate the effect of spatial cueing in each corrected location on performing a simple task. Five subjects were asked to complete a simple detection task of a small dark spot stimulus presented randomly at four cardinal retinal locations (eccentricity: 5°) under manipulation of attention via an exogenous cue. Both clear and blurred targets were randomly displayed across the visual field and viewed monocularly through a vision simulator, used to minimize peripheral ocular aberrations. Results confirmed the advantage of clear vs/ blurred images under spatial uncertainty. It was also found that the visual benefit from blur correction is unequal at isoeccentric locations, even for a simple detection task. While manipulation of attention in the presence of spatial uncertainty significantly modulated response time (RT) performance, no differential effect was observed for clear and blurred stimuli, suggesting that attention has only a small effect on the optical benefit for a simple detection task when the display is depleted (no distractor). Those observations highlight the importance of field performance asymmetries in optical interventions and may offer useful implications for the design of extrafoveal refractive correction. Further studies are needed to elucidate how the focus of attention interacts with the perceived gain of vision correction.


Asunto(s)
Visión Ocular/fisiología , Percepción Visual/fisiología , Adulto , Atención/fisiología , Simulación por Computador , Señales (Psicología) , Ojo Artificial , Anteojos , Humanos , Orientación Espacial , Estimulación Luminosa , Tiempo de Reacción/fisiología , Errores de Refracción/fisiopatología , Errores de Refracción/psicología , Pruebas de Visión , Agudeza Visual , Campos Visuales , Adulto Joven
12.
Indian J Dent Res ; 31(2): 326-330, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32436918

RESUMEN

A patient who is suffering from complete loss of one eye or one phthisical eye due to injury, inflammation, or tumor experiences lot of physical and psychological trauma. Ocular prostheses are used in the management of a wide variety of acquired and congenital anopthalmia. Several techniques have been used in fitting and fabricating artificial eyes. These eyes can be prefabricated or custom made, but a prosthesis that is lifelike in appearance provides a sense of psychological security to the patient, which is better achieved with custom ocular prosthesis. This article discusses series of cases made by utilizing one of the latest techniques of iris duplication (digital imaging) and also aims at enhanced awareness of the cosmetic benefits of custom designed ocular prosthesis when compared with stock eye.


Asunto(s)
Ojo Artificial , Iris , Atrofia , Humanos , Diseño de Prótesis , Proyectos de Investigación
13.
Nature ; 581(7808): 264-265, 2020 05.
Artículo en Inglés | MEDLINE | ID: mdl-32433616
14.
Rev. Odontol. Araçatuba (Impr.) ; 41(1): 19-23, jan.-abr. 2020. ilus
Artículo en Portugués | LILACS, BBO - Odontología | ID: biblio-1102361

RESUMEN

O olho, responsável por um dos nossos cinco sentidos, é considerado a janela das nossas vidas, por onde observamos as paisagens, vivenciamos experiências e registramos as imagens. A ausência parcial ou total desse orgão pode acarretar problemas funcionais, estéticos, pessoais e sociais ao seu portador. Por se encontar na região da face, aréa considerada nobre para a identidade do indivíduo, a deformidade ocular acaba sendo muito constrangedora ao mesmo, dificultando sua interação com o próximo e afetando diretamente seus aspectos psicológicos. O objetivo deste trabalho é apresentar um relato de caso clínico de reabilitação com prótese ocular. Dessa forma foi realizado a seguinte sequência clínica: Moldagem da cavidade ocular, prova e ajustes da esclera artificial, pintura da íris artificial e instalação da prótese finalizada. O tratamento reabilitador possibilitou a restauração da harmonia facial e, com isso, devolveu a autoestima perdida do indivíduo, reinserindo-o à sociedade(AU)


The eye, responsible for one of our five senses, is considered the window of our lives, through which we observe the landscapes, experience and record the images. The partial or total absence of this organ can cause functional, aesthetic, personal and social problems to its bearer. Because it is found in the region of the face, which is considered noble for the identity of the individual, the eye deformity ends up being very embarrassing to it, making it difficult to interact with others and directly affecting their psychological aspects. The aim of this paper is to present a case report of rehabilitation with ocular prosthesis. Thus, the following clinical sequence was performed: Ocular cavity molding, testing and adjustments of the artificial sclera, painting of the artificial iris and installation of the finished prosthesis. The rehabilitative treatment enabled the restoration of facial harmony and, thus, returned the lost selfesteem of the individual, reinserting him to society(AU)


Asunto(s)
Humanos , Masculino , Adulto , Resinas Acrílicas , Anoftalmos , Ojo Artificial , Estética
15.
Sci Rep ; 10(1): 1600, 2020 01 31.
Artículo en Inglés | MEDLINE | ID: mdl-32005971

RESUMEN

We designed this study to assess if surgical safety can be improved by intraoperative use of intraocular lens (IOL) for cataract phacoemulsification. We performed phacoemulsification cataract removal on 401 patients. We randomly assigned these patients into three groups: the standard setting (Group I, n = 134), with reduced vacuum and flow rate (Group II, n = 137), and with IOL insertion before the last quadrant was emulsified with standard setting (Group III, n = 130). The primary outcomes included the risk of posterior capsular rupture (PCR), ultrasound time, energy, and complications. The secondary outcomes included central corneal thickness (CCT), CCT changes, endothelial cells (ETC) counting, ETC loss, and the best corrected distance visual acuity (BCVA) measured on day 1, day 7 and day 30. If PCR occurred, we emulsified the residual lens materials after insertion of IOL and clean of the prolapsed vitreous. We found that the risk of PCR in Group III (0/130) was lower than Group I (9/134, corrected relative risk (RR) = 18.44, 95% CI: 1.08-313.56) and Group II (3/137, corrected RR = 6.64, 95% CI: 0.35-27.41). Group III showed better BCVA on day 1 and 7, less ECC loss on day 7 and 30, and less CCT increase on day 1 and 7. No cases converted to extracapsular cataract extraction. No residual lens materials misdirected into vitreous cavity. Intraoperative use of IOL can improve surgical safety for dense cataract phacoemulsification.


Asunto(s)
Extracción de Catarata/métodos , Catarata/fisiopatología , Implantación de Lentes Intraoculares/métodos , Cristalino/fisiopatología , Lentes Intraoculares , Facoemulsificación/métodos , Anciano , Células Endoteliales/fisiología , Ojo Artificial , Femenino , Humanos , Masculino , Agudeza Visual/fisiología
17.
J Stomatol Oral Maxillofac Surg ; 121(3): 268-277, 2020 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-31610244

RESUMEN

A systematic review was conducted in early 2019 to evaluate the articles published that dealt with digital workflow, CAD, rapid prototyping and digital image processing in the rehabilitation by maxillofacial prosthetics. The objective of the review was to primarily identify the recorded cases of orofacial rehabilitation made by maxillofacial prosthetics using computer assisted 3D printing. Secondary objectives were to analyze the methods of data acquisition recorded with challenges and limitations documented with various software in the workflow. Articles were searched from Scopus, PubMed and Google Scholar based on the predetermined eligibility criteria. Thirty-nine selected papers from 1992 to 2019 were then read and categorized according to type of prosthesis described in the papers. For nasal prostheses, Common Methods of data acquisition mentioned were computed tomography, photogrammetry and laser scanners. After image processing, computer aided design (CAD) was used to design and merge the prosthesis to the peripheral healthy tissue. Designing and printing the mold was more preferred. Moisture and muscle movement affected the overall fit especially for prostheses directly designed and printed. For auricular prostheses, laser scanning was most preferred. For unilateral defects, CAD was used to mirror the healthy tissue over to the defect side. Authors emphasized on the need of digital library for prostheses selection, especially for bilateral defects. Printing the mold and conventionally creating the prosthesis was most preferred due to issues of proper fit and color matching. Orbital prostheses follow a similar workflow as auricular prosthesis. 3D photogrammetry and laser scans were more preferred and directly printing the prosthesis was favored in various instance. However, ocular prostheses fabrication was recorded to be a challenge due to difficulties in appropriate volume reconstruction and inability to mirror healthy globe. Only successful cases of digitally designed and printed iris were noted.


Asunto(s)
Implantes Dentales , Prótesis Maxilofacial , Ojo Artificial , Humanos , Imagenología Tridimensional , Diseño de Prótesis
19.
Clin Nucl Med ; 45(1): e59-e60, 2020 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-31283607

RESUMEN

Ocular prosthesis is used as a replacement in the orbit following enucleation or evisceration of the eye. Polymethyl methacrylate (PMMA), hydroxyapatite (HA) and porous polyethylene (PP) are some examples of the materials used in ocular prosthesis. We present a case of an 82-year-old man with prostate cancer who underwent F-NaF PET/CT imaging for evaluation of bone metastases and was incidentally found to have increased NaF uptake in the ocular prosthesis.


Asunto(s)
Ojo Artificial , Radioisótopos de Flúor , Fluoruro de Sodio/metabolismo , Anciano de 80 o más Años , Transporte Biológico , Reacciones Falso Positivas , Humanos , Masculino , Tomografía Computarizada por Tomografía de Emisión de Positrones , Neoplasias de la Próstata/diagnóstico por imagen , Neoplasias de la Próstata/metabolismo , Neoplasias de la Próstata/patología
20.
Klin Monbl Augenheilkd ; 236(12): 1461-1471, 2019 Dec.
Artículo en Alemán | MEDLINE | ID: mdl-31745943

RESUMEN

Lens exchange surgery is the most common performed surgical ophthalmological procedure worldwide. The intraocular lens (IOL) is placed into the capsular bag. The power of the IOL decides whether afterwards the patient will be able to see objects in the far or near distance without glasses. Due to constant development of the IOL design in nowadays it is however possible to implant a lens which has multiple foci and consequently allows the patient to see in several distances. In this review article we summarize the most critical points which need to be considered when placement of a multifocal lens is planned in lens exchange surgery. Additionally, we present an overview of the currently available trifocal IOLs and IOLs with an extended depth of focus. We furthermore discuss the advantages and disadvantages of the multifocal IOLs as compared to monofocal IOLs.


Asunto(s)
Lentes Intraoculares , Lentes Intraoculares Multifocales , Facoemulsificación , Ojo Artificial , Anteojos , Humanos , Diseño de Prótesis , Agudeza Visual
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