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Published in: International Ophthalmology 6/2017

01-12-2017 | Case Report

Comparing distance visual acuity measurement with a novel eye chart and the Landolt C chart in a population of children aged 6–18 years

Authors: John P. Gorham, Beau B. Bruce, Amy K. Hutchinson

Published in: International Ophthalmology | Issue 6/2017

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Abstract

Purpose

The Handy Eye Chart™ is designed to assist in evaluating the visual acuity of patients with non-standard communication styles. The Handy Eye Chart™ has been previously validated against the early treatment diabetic retinopathy study (ETDRS) chart. The aim of this research is to compare visual acuity outcomes with The Handy Eye Chart™ against the international gold standard, the Landolt C chart, in a population of children.

Methods

Sixty participants between the ages of 6 and 18 were recruited at the Pediatric Section of the Department of Ophthalmology at the Emory Eye Center. Visual acuity was evaluated using The Handy Eye Chart™ and the Landolt C Chart, altering the order of administration between charts. The visual acuity data were compared using t test, linear regression, and Bland–Altman analysis.

Results

The mean difference in visual acuity was 0.02 logMAR (CI 0.009–0.04, p = 0.002). The correlation coefficient was 0.98. The Bland–Altman analysis shows the 95% limits of agreement between the charts to be −0.14 to 0.09 logMAR.

Conclusions

The Handy Eye Chart™ is a valid measure of visual acuity when compared with the international gold standard, the Landolt C Chart.
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Metadata
Title
Comparing distance visual acuity measurement with a novel eye chart and the Landolt C chart in a population of children aged 6–18 years
Authors
John P. Gorham
Beau B. Bruce
Amy K. Hutchinson
Publication date
01-12-2017
Publisher
Springer Netherlands
Published in
International Ophthalmology / Issue 6/2017
Print ISSN: 0165-5701
Electronic ISSN: 1573-2630
DOI
https://doi.org/10.1007/s10792-016-0384-3

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