Refractive error study in young subjects：results from a rural area in Paraguay  

作　　者：Isabel Signes-Soler 

机构地区：[1]Non-govemmental Organization Vision Without Borders (Visio Sense Fronteres), Alicante 03710, Spain [2]School of Advanced Education, Research and Accreditation (SAERA), Castellon de la Plana 12001, Spain [3]Faculty of Optics and Optometry, University Complutense of Madrid, Madrid 28037, Spain [4]European University of Madrid, Madrid 28108, Spain [5]Foundation for the Visual Quality (FUNCAVIS), Alicante 03016, Spain [6]Department of Optics, Pharmacology, and Anatomy, University of Alicante, Alicante 03690, Spain

出　　处：《International Journal of Ophthalmology(English edition)》2017年第3期467-472,共6页国际眼科杂志（英文版）

摘　　要：AIM：To evaluate the distribution of refractive error in young subjects in a rural area of Paraguay in the context of an international cooperation campaign for the prevention of blindness. METHODS：A sample of 1466 young subjects（ranging from 3 to 22 years old）,with a mean age of 11.21±3.63 years old,were examined to assess their distance visual acuity（VA）and refractive error. The first screening examination performed by trained volunteers,included visual acuity testing,autokeratometry and non-cycloplegic autorefraction. Inclusion criteria for a second complete cycloplegic eye examination by an optometrist were VA 〈20/25（0.10 log MAR or 0.8 decimal）and/or corneal astigmatism ≥1.50 D. RESULTS：An uncorrected distance VA of 0 log MAR（1.0decimal）was found in 89.2% of children. VA 〈20/25 and/or corneal astigmatism ≥1.50 D was found in 3.9% of children（n=57）,with a prevalence of hyperopia of 5.2%（0.2%of the total）in this specific group. Furthermore,myopia（spherical equivalent ≤-0.5 D）was found in 37.7% of the refracted children（0.5% of the total）. The prevalence of refractive astigmatism（cylinder ≤-1.50 D）was 15.8%（0.6% of the total）. Visual impairment（VI）（0.05≤VA≤0.3）was found in 12/114（0.4%）of the refracted eyes. Main causes for VI were refractive error（58%）,retinal problems（17%,2/12）,albinism（17%,2/12）and unknown（8%,1/12）.CONCLUSION：A low prevalence of refractive error has been found in this rural area of Paraguay,with higher prevalence of myopia than of hyperopia.AIM：To evaluate the distribution of refractive error in young subjects in a rural area of Paraguay in the context of an international cooperation campaign for the prevention of blindness. METHODS：A sample of 1466 young subjects（ranging from 3 to 22 years old）,with a mean age of 11.21±3.63 years old,were examined to assess their distance visual acuity（VA）and refractive error. The first screening examination performed by trained volunteers,included visual acuity testing,autokeratometry and non-cycloplegic autorefraction. Inclusion criteria for a second complete cycloplegic eye examination by an optometrist were VA 〈20/25（0.10 log MAR or 0.8 decimal）and/or corneal astigmatism ≥1.50 D. RESULTS：An uncorrected distance VA of 0 log MAR（1.0decimal）was found in 89.2% of children. VA 〈20/25 and/or corneal astigmatism ≥1.50 D was found in 3.9% of children（n=57）,with a prevalence of hyperopia of 5.2%（0.2%of the total）in this specific group. Furthermore,myopia（spherical equivalent ≤-0.5 D）was found in 37.7% of the refracted children（0.5% of the total）. The prevalence of refractive astigmatism（cylinder ≤-1.50 D）was 15.8%（0.6% of the total）. Visual impairment（VI）（0.05≤VA≤0.3）was found in 12/114（0.4%）of the refracted eyes. Main causes for VI were refractive error（58%）,retinal problems（17%,2/12）,albinism（17%,2/12）and unknown（8%,1/12）.CONCLUSION：A low prevalence of refractive error has been found in this rural area of Paraguay,with higher prevalence of myopia than of hyperopia.

关 键 词：refractive error blindness visual impairment myopia hyperopia 

分 类 号：R77[医药卫生—眼科]