ABSTRACT Objective To investigate relations between electronic screen use and eye health in a representative sample of the Brazilian population. Methods Data were collected online and analyzed at a private Brazilian hospital (Provisão Hospital, Maringá, Brazil). Male and female individuals aged 12 to 35 years participated in the study. A population-based cross-sectional survey based on a questionnaire developed using the Google Forms interface was carried out. The questionnaire was answered anonymously in order to ensure the confidentiality of data and […]

ABSTRACT Objective: To evaluate quality of life of elderly patients before and after cataract surgery. Methods: A longitudinal analytical study with quantitative approach. Data collection was performed in two stages (before cataract surgery and 2 months after the procedure), when two questionnaires were used – a sociodemographic and the World Health Organization Quality of Life (WHOQLD). Descriptive statistics and Student’s t test, analysis of variance, Mann-Whitney and Kruskal-Wallis tests were employed. Results: A total of 34 elderly individuals participated in […]

ABSTRACT Objective To verify the prevalence and the main causes of low visual acuity among students, to correct refractive errors with eyewear, and to establish a relation between vision and school performance. Methods This is a cross-sectional, quantitative study of a social action carried out in a public elementary and high school in the city of Araçatuba (SP). Specialized evaluation was indicated to students who presented visual acuity ≤0.7 in one or both eyes, with or without prior optical correction, […]

ABSTRACT Purpose: To compare the accuracy of best-corrected visual acuity in patients with diabetic retinopathy to corrected visual acuity ≤ 20/200 in both eyes, measured by Snellen and ETDRS charts, in addition to evaluation of reading time by Jaeger chart. Methods: An observational and cross-sectional study. Study Groups: Group I, patients with visual acuity 20/200, and Group II, patients with visual acuity >20/200. Patients were subdivided into those with non-proliferative diabetic retinopathy and with proliferative diabetic retinopathy. The study variables […]

ABSTRACT Objective To compare the performance of Sanders-Retzlaff-Kraft/Theoretical, Hoffer Q, Barrett Universal II, Kane, and Hill-radial basis function formulas to calculate intraocular lens power in eyes with normal axial length, in terms of predicting target refraction by using partial coherence interferometry technology. Methods Phacoemulsification and intraocular lens implantation were performed in 135 eyes of 135 patients with an axial length between 22 and 24.5 mm. Axial length, keratometry, and anterior chamber depth were measured by intraocular lens Master 500. Sanders-Retzlaff-Kraft/Theoretical, […]

ABSTRACT Objective To evaluate the population awareness of glaucoma. Methods A cross-sectional, descriptive, non-controlled study, using a questionnaire to collect data. The questions addressed sociodemographic profile and glaucoma, and were asked to individuals, before and after the presentation of an educational video on glaucoma. It was conducted in the city of Fortaleza (CE) and the respondents spontaneously decided to participate in a glaucoma prevention campaign. Results A total of 153 questionnaires were collected; in that, 130 were considered eligible, including […]

ABSTRACT Objective: To describe ocular surface findings in impression cytology obtained from healthy rabbit conjunctiva treated with interferon alpha-2b eyedrop, and compare them to findings after use of mitomycin C 0.02%. Methods: An experimental study using a rabbit model was performed between September 2013 and October 2014 at the Faculdade de Medicina de Marília, Universidade Federal de São Paulo, Clínica de Olhos Moacir Cunha. Thirty New Zealand white rabbits were divided into 6 groups and received interferon alpha-2b or mitomycin […]

ABSTRACT Objective: To assess if early alterations detected by Pentacam in children suffering from mild ocular allergy are suggestive of ectasia. Methods: A retrospective analysis of 49 medical records of patients of both sexes, aged between 3 and 14 years was performed. In this sample, 31 children suffered from grade I ocular allergy, and 18 presented no signs or symptoms of ocular allergy and comprised the control group. Several Pentacam indexes were evaluated. Results: A statistically significant association was found […]