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Original article

Normative data for the crowded logMAR Kay’s pictures vision test in children

Authors:

Teresa Saul ,

Orthoptic Department, Newcastle Eye Centre, Royal Victoria Infirmary, Newcastle upon Tyne
About Teresa
BSc (Orthoptics)
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Kate Taylor

Orthoptic Department, Newcastle Eye Centre, Royal Victoria Infirmary, Newcastle upon Tyne
About Kate
BSc (Orthoptics)
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Abstract

Aim: Crowded logMAR Kay’s pictures is a commonly used vision test in children and our aim was to establish the normative uniocular mean, test/re-test and inter-ocular visual acuity data for this test.

Methods: This was a prospective study on a visually normal paediatric population aged 3–4 years. Normative vision values were collected using the crowded logMAR Kay’s pictures test, from children who passed their primary vision screening check.

Results: Mean vision data were collected on 110 participants, test/re-test data for 39 participants and inter-ocular acuity data for 38 participants. The overall mean vision value was 0.108 (95% CI ± 0.012, SD 0.062); clinically this mean equates to 0.100 (6/7.5 Snellen’s equivalent). The coefficient of reliability for the test/re-test difference was 0.122; indicating ≥5 pictures difference was significant. The coefficient of reliability for the inter-ocular difference was 0.133; indicating a ≥6 pictures difference was significant.

Conclusion: Normative vision data have been produced for clinicians using the crowded logMAR Kay’s pictures vision test in 3- to 4-year-olds.

DOI: https://doi.org/10.22599/bioj.53
How to Cite: Saul, T. and Taylor, K., 2012. Normative data for the crowded logMAR Kay’s pictures vision test in children. British and Irish Orthoptic Journal, 9, pp.36–43. DOI: http://doi.org/10.22599/bioj.53
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Published on 01 Aug 2012.
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