Refractive error and visual impairment in school children in Northern Ireland - Archive ouverte HAL Access content directly
Journal Articles British Journal of Ophthalmology Year : 2010

Refractive error and visual impairment in school children in Northern Ireland

Lisa O'Donoghue
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Julie Faith Mcclelland
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Nicola S Logan
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Alicja R Rudnicka
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Christopher G Owen
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Kathryn Saunders
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Aims To describe the prevalence of refractive error (myopia and hyperopia) and visual impairment in a representative sample of white school children Methods The Northern Ireland Childhood Errors of Refraction (NICER) study, a population-based cross-sectional study, examined 661 white 12-13-year-old and 392 white 6-7-year-old children between 2006 and 2008. Procedures included assessment of monocular logarithm of the minimum angle of resolution (logMAR), visual acuity (unaided and presenting) and binocular open-field cycloplegic (1% cyclopentolate) autorefraction. Myopia was defined as -0.50DS or more myopic spherical equivalent refraction (SER) in either eye, hyperopia as ≥+2.00DS SER in either eye if not previously classified as myopic. Visual impairment was defined as >0.30 logMAR units (equivalent to 6/12). Results Levels of myopia were 2.8% (95% CI 1.3-4.3) in younger and 17.7% (95% CI 13.2-22.2) in older children: corresponding levels of hyperopia were 26% (95% CI 20-33) and 14.7% (95% CI 9.9-19.4). The prevalence of presenting visual impairment in the better eye was 3.6% in 12-13-year-old children compared with 1.5% in 6-7-year-old children. Almost one in four children fail to bring their spectacles to school. Conclusions This study is the first to provide robust population-based data on the prevalence of refractive error and visual impairment in Northern Irish school children. Strategies to improve compliance with spectacle wear are required.
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hal-00557358 , version 1 (19-01-2011)



Lisa O'Donoghue, Julie Faith Mcclelland, Nicola S Logan, Alicja R Rudnicka, Christopher G Owen, et al.. Refractive error and visual impairment in school children in Northern Ireland. British Journal of Ophthalmology, 2010, 94 (9), pp.1155. ⟨10.1136/bjo.2009.176040⟩. ⟨hal-00557358⟩


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