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Sampling and measurement methods for a study of childhood refractive error in a UK population

O'Donoghue, L, Saunders, KJ, McClelland, JF, Logan, NS, Rudnicka, AR, Gilmartin, B and Owen, CG (2010) Sampling and measurement methods for a study of childhood refractive error in a UK population. British Journal of Ophthalmology, 94 (9). pp. 1150-1154. [Journal article]

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DOI: 10.1136/bjo.2009.167965


Background There is a paucity of data describing the prevalence of childhood refractive error in the United Kingdom. The Northern Ireland Childhood Errors of Refraction study, along with its sister study the Aston Eye Study, are the first population-based surveys ofchildren using both random cluster sampling and cycloplegic autorefraction to quantify levels of refractive error in the United Kingdom.Methods Children aged 6-7 years and 12-13 years were recruited from a stratified random sample of primary and post-primary schools, representative of the population of Northern Ireland as a whole. Measurements included assessment of visual acuity, oculomotor balance, ocular biometry and cycloplegic binocular open-field autorefraction. Questionnaires were used to identify putative risk factors for refractive error.Results 399 (57%) of 6-7 years and 669 (60%) of 12-13 years participated. School participation rates did not vary statistically significantly with the size of the school, whether the school is urban or rural, or whether it is in a deprived/non-deprived area. The gender balance, ethnicity and type of schooling of participants are reflective of the Northern Ireland population.Conclusions The study design, sample size and methodology will ensure accurate measures of the prevalence of refractive errors in the target population and will facilitate comparisons with other population based refractive data.

Item Type:Journal article
Faculties and Schools:Faculty of Life and Health Sciences
Faculty of Life and Health Sciences > School of Biomedical Sciences
Research Institutes and Groups:Biomedical Sciences Research Institute
Biomedical Sciences Research Institute > Optometry and Vision Science
ID Code:15478
Deposited By: Dr Lisa O'Donoghue
Deposited On:21 Sep 2010 14:27
Last Modified:17 Oct 2017 15:53

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