Original Research

Comparing visual acuity in preschool children using the Lea symbols and Sheridan Gardiner charts

Aghafekokhian B. Osaiyuwu, George N. Atuanya
African Vision and Eye Health | Vol 74, No 1 | a22 | DOI: https://doi.org/10.4102/aveh.v74i1.22 | © 2015 Aghafekokhian B. Osaiyuwu, George N. Atuanya | This work is licensed under CC Attribution 4.0
Submitted: 10 September 2014 | Published: 11 June 2015

About the author(s)

Aghafekokhian B. Osaiyuwu, Department of Optometry, University of Benin, Nigeria
George N. Atuanya, Department of Optometry, University of Benin, Nigeria

Abstract

Visual acuity measurement is a vital part of an optometric examination. The purpose of the present study was to compare visual acuity in preschool children using two charts – the Lea symbols chart and the Sheridan Gardiner chart. One hundred and fifty-three preschool children (72 boys and 81 girls) between the ages of 3 and 5 years (mean age and standard deviation 4.23 ± 0.78 years) were recruited from five randomly selected nursery schools. Distance visual acuity was measured monocularly and binocularly after a pre-test was done. An interval of 5 minutes was allowed for testing with both charts. The ages and sexes of each child were documented. Results showed a statistical difference in visual acuities using both charts (p < 0.05). There was also a statistical difference in both charts regarding age. There was no significant gender difference between the results from each chart.

Keywords

Lea symbols chart, Sheridan Gardiner chart, visual acuity

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