ABSTRACT Objective: To develop and validate a smartphone application capable of magnifying near images and, through educational videos, informing users about presbyopia. Methods: This was a cross-sectional, quantitative study conducted by a multidisciplinary team of ophthalmologists and software engineers. The development and validation of the application, named PRESB, occurred in three main stages. First, the user interface and native functions were designed. Second, the application was tested by patients who had undergone bilateral age-related cataract surgery with implantation of a […]

ABSTRACT Implantation of phakic intraocular lenses for refractive purpose is a safe and efficient elective surgical alternative. This option should be considered to electively treat ametropia when laser corneal refractive surgery has higher risk of complications, either due to corneal characteristics or the magnitude of ametropia. This article provides a prospective review of the phakic lenses available in the Brazilian market in 2020 and their characteristics.

Objetivo: Relatar a prevalência e analisar os padrões de astigmatismo corneano em candidatos à cirurgia de catarata. Métodos: Os pesquisadores examinaram 2136 olhos de 1204 pacientes a cirurgia de catarata de 1 de janeiro a 31 de dezembro de 2016. Todos os candidatos foram avaliados com interferometria de coerência parcial (IOLMaster). Os resultados foram analisados estatisticamente em relação às variáveis qualitativa e quantitativa. Resultados: A média de idade dos pacientes foi de 71,9 anos, com predomínio do sexo feminino. A […]

We report a case of residual astigmatism after cataract surgery with toric intraocular lens (IOL) implantation (Acrysof Toric, Alcon, Frot Worth TX). Residual refraction (+1,25 -2,50 x 105º) and IOL positioning were correlated with total ray-tracing wavefront aberrometry integrated with anterior corneal surface Placido-based topography to calculate internal aberrations (iTrace, Tracey Technologies, Houston TX). The ideal IOL axis to minimize residual refraction was calculated with Berdahl & Hardten (astigmatismfix.com). IOL rotation to the indicated axis was successfully performed 5 months […]

Objective: To evaluate the correlation of optical biometry and target with variable ages, anterior chamber depth, axial length, R1/K1 and R2/K2 established by two optical biometry devices in patients with cataract. Methods: The study included the analysis of 348 medical records, from which 503 cataract eyes were selected, which underwent evaluation by the optical biometric devices IOL Master 700 and Lenstar LS 900 in the period of April to July 2017. Data collected were: age, anterior chamber depth, axial length, […]

Apresentamos o caso de um paciente de 12 anos de idade com ceratocone avançado em ambos os olhos, que recebeu um tratamento em dois estágios no olho direito (OD) de modo a diminuir a taxa de progressão do ceratocone e reabilitar a visão do paciente. No exame clínico inicial, a acuidade visual sem correção no OD era contar dedos; refração sob cicloplegia era -22.00 – 7,50 x 100° = 20/400; a topografia demonstrou uma curvatura de 64,28 x 105° / […]

We present a case of a 12-year-old patient with advanced keratoconus in both eyes who received a two-staged treatment in the right eye (OD) to decrease keratoconus progression rate and rehabilitate patient’s vision. At the initial clinical examination, visual acuity without correction in OD was count fingers; cycloplegic refraction was -22.00 – 7,50 x 100° = 20/400; corneal topography demonstrated a curvature of 64.28 x 105° / 55.38 x 15°; and tomography (WaveLight – Allegro Oculyzer) demonstrated a curvature of […]

Objective: Cataract is the leading cause of reversible blindness in the world and its treatment is based on surgery, facectomy. The evolution of the procedure has been based on several pillars, but it is in the development of new types of intraocular lenses that has been showing considerable innovations. Current lenses are capable, in addition to treating cataracts, of correcting refractive errors. The aim of this study was to evaluate the quality of life and post-facectomy vision, comparing multifocal lenses […]