Objective: To describe and analyze the prevalence of visual impairment and its causes in public school students in Belo Horizonte/MG. Methods: Cross-sectional study of 1.452 public school children from 5 to 19 years old, in Belo Horizonte/MG, screened and evaluated between 2011 and 2014. Results: Of the total sample, 150 patients (10,33%) had low visual acuity at the screening, and were referred to an ophthalmologist to further examination. Forty (26%) of the referred patients presented at the ambulatory, where 29 […]

Objective: To determine the measurements of interpupillary distance (IPD) and ocular convergence in the presbyopic population with corneal reflex pupillometer. Methods: 160 subjects (66 males and 94 females) aged 41 to 85 years have their measurements of IPD done – far and near – by CRP method. Results: The mean age was 55.9 ± 11.5 years; the average IPD was 65.02 ± 2.78 and 62.47 ± 3.15 mm for male and female respectively. Also, the average convergence was 5.00 ± […]

OBJECTIVE:To determine the refractive profile of presbyopic people in the western brazilian Amazon, establishing as the pilot cities Manaus and other nine of sixty-one cities in the state of Amazonas. METHODS: Retrospective analysis of medical records of 8.225 patients. People who were over the age of 40 in 10 cities in the state of Amazonas (Manaus and 09 municipalities in the hinterland) were examined from september/2008 to december/2011. The data were classified by age, sex, economic activity (retired or not), […]

OBJECTIVE: Evaluate induced astigmatism in progressive addition lenses into deflectometer measurements. METHODS: Eleven progressive addition lenses were included with power away from +1.00D and addition 2.00D. Induced astigmatism was assessed twelve points in the zone intermediate, with six on each side of the progressive corridor in deflectometer. RESULTS: There are significant differences between the sums of induced astigmatism on each side of the corridor and in the general in progressive addition lenses studied, with coefficient of variation with strong dispersion […]