ABSTRACT Objective: To measure visual acuity in high contrast and low contrast sensitivities in different grades of visible light transmission films in three different positions (front, lateral and rear windows). Methods: Forty-four healthy volunteers between 30-75 y-o, with BCVA better than 0,5, were tested in the 5 following vehicles with different grades of visible light transmission films. Vehicle 1: 75% in the front and 70% in the lateral and rear windows; Vehicle 2: 70% in the front and lateral windows […]

Objective: To compare contrast sensitivity in different age groups: 20 to 25, 40 to 45 and above 60 years old. Methods: We performed a cross sectional study with individuals of different ages, with visual acuity better than 20/25, without eye disease and without prior eye surgery. Visual acuity was measured by Snellen test and contrast sensitivity was evaluated by OPTEC 3500P(r) equipment. Statistical analysis was performed using Wilcoxon test, considering a 95% confidence interval. Results: Compared to patients between 20 […]

Purpose: To evaluate eye sensitivity disorder (similar to glare), with symptoms of visual fatigue, through watching television ULTRA HD3D-55-inch 4K curved screen among volunteers with normal eye examination. Methods: A prospective, longitudinal, case-control study, with inclusion and exclusion criteria and groups formation enrolled by age range. A comparison of a video documentary presented with the ULTRA HD TV 4K and with the FULL HD TV before and after the previous tele-audience, consisting of an evaluation of three phases of the […]

Purpose: To evaluate the visual function of patients with bilateral implantation of multifocal diffractive IOL AT Lisa 809MTM by visual acuity with and without correction, contrast sensitivity curve, defocus curve and visual function questionnaire (39 VQF). Methods: Interventional clinical prospective study, which evaluated the results of 20 eyes of 10 patients who underwent phacoemulsification and IOL implantation between february and june 2012. Results: The average of residual postoperative ametropia was 0.05 ± 0.42 (-0.75 to +1.25 D) spherical diopters and […]

Objetivo: Comparar a sensibilidade ao contraste e análise de “wavefront” com OPD-scan em pacientes submetidos a cirurgia de facoemulsificação com implantes de lentes intraoculares AcrySof SN60D3 multifocal, AcrySof SN60WF monofocal asférica e AcrySof SA60AT monofocal esférica. Métodos: Trinta e dois olhos com a lente intraocular multifocal, 32 olhos com a lente intraocular monofocal asférica e 32 olhos com a lente intraocular monofocal esférica. A avaliação oftalmológica foi realizada no primeiro, terceiro, sétimo, e nonagésimo dia pós-operatório. Todos os exames foram […]

Purpose: Compare the OPD-scan results and the contrast sensitivity in patients who had implantation of the AcrySof SN60D3 multifocal IOL, the AcrySof SA60AT spheric monofocal IOL and the AcrySof SN60AT aspheric monofocal IOL. Methods: Thirty-two eyes received the multifocal IOL, 32 eyes received the spheric monofocal IOL and 32 eyes received the aspheric monofocal IOL. They were closely paired in age, sex, pre-operative wavefront analysis and contrast sensitivity. All patients was tested with the OPD-scan aberrometer, ETDRS chart at 100% […]

PURPOSE: Compare the wavefront and contrast sensitivity of bilateral pseudophakic patients with aspheric in one eye and spheric intraocular lenses in the other. METHODS: This prospective, comparative, randomized study, double masked, included 32 eyes of 16 patients. A complete ophthalmic evaluation was done before, and after surgery at days 1,3, 7 and 90, and included best corrected visual acuity, the contrast sensitivity, under photopic and mesopic conditions, and aberrometry. Almost all exams were done monocularly with undilated pupils (aberrometry under […]