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Refractive errors among children, adolescents and adults attending eye clinics in Mexico.

Abstract：

AIM:To assess the proportion of refractive errors in the Mexican population that visited primary care optometry clinics in fourteen states of Mexico. METHODS:Refractive data from 676 856 patients aged 6 to 90y were collected from optometry clinics in fourteen states of Mexico between 2014 and 2015. The refractive errors were classified by the spherical equivalent (SE), as follows: sphere+½ cylinder. Myopia (SE>-0.50 D), hyperopia (SE>+0.50 D), emmetropia (-0.50≤SE≤+0.50), and astigmatism alone (cylinder≥-0.25 D). A negative cylinder was selected as a notation. RESULTS:The proportion (95% confidence interval) among all of the subjects was hyperopia 21.0% (20.9-21.0), emmetropia 40.7% (40.5-40.8), myopia 24.8% (24.7-24.9) and astigmatism alone 13.5% (13.4-13.5). Myopia was the most common refractive error and frequency seemed to increase among the young population (10 to 29 years old), however, hyperopia increased among the aging population (40 to 79 years old), and astigmatism alone showed a decreasing trend with age (6 to 90y; from 19.7% to 10.8%). There was a relationship between age and all refractive errors (approximately 60%, aged 50 and older). The proportion of any clinically important refractive error was higher in males (61.2%) than in females (58.3%; P<0.0001). From fourteen states that collected information, the proportion of refractive error showed variability in different geographical areas of Mexico. CONCLUSION:Myopia is the most common refractive error in the population studied. This study provides the first data on refractive error in Mexico. Further programs and studies must be developed to address the refractive errors needs of the Mexican population.

journal_name

Int J Ophthalmol

journal_title

International journal of ophthalmology

authors

Gomez-Salazar F,Campos-Romero A,Gomez-Campaña H,Cruz-Zamudio C,Chaidez-Felix M,Leon-Sicairos N,Velazquez-Roman J,Flores-Villaseñor H,Muro-Amador S,Guadron-Llanos AM,Martinez-Garcia JJ,Murillo-Llanes J,Sanchez-Cuen J,Llausas-Var

doi

10.18240/ijo.2017.05.23

subject

Has Abstract

pub_date

2017-05-18 00:00:00

pages

796-802

issue

eissn

2222-3959

issn

2227-4898

pii

ijo-10-05-796

journal_volume

pub_type

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Refractive errors among children, adolescents and adults attending eye clinics in Mexico.