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John Gorham, Beau B Bruce, Amy Hutchinson; Comparison of the Handy Eye Chart™ to the Lea Symbols Chart in a Population of Deaf Children aged 7-18 years. Invest. Ophthalmol. Vis. Sci. 2016;57(12):1549.
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© 2017 Association for Research in Vision and Ophthalmology.
The evaluation of visual acuity among Deaf individuals can be difficult. The Handy Eye Chart™ is designed to assist in evaluating patients with non-standard communication styles. The aim of this research is to compare visual acuity outcomes with The Handy Eye Chart™ against the Lea Symbols Chart in a population of Deaf children and to compare testability and preference between the charts.
24 participants were recruited at the Atlanta Area School for the Deaf. Visual Acuity was evaluated using The Handy Eye Chart™ and the Lea Symbols Chart. Patient preference and duration of testing were measured.
The mean difference between the visual acuity as measured by each chart was – 0.02 logmar (95% CI: -0.06-0.03). Testing with the Handy Eye Chart™ was an average of 13.79 seconds faster than the Lea Symbols Chart (95% CI: 1.1-26.47; p=0.03). 71% of the participants preferred the Handy Eye Chart™ (95% CI: 49-87%; p=0.07).
The Handy Eye Chart™ is a fast, valid, and preferred tool for measuring visual acuity in Deaf children age 7-18 years. Additional research is needed to evaluate the utility of the Handy Eye Chart™ in younger children and Deaf adults.
This is an abstract that was submitted for the 2016 ARVO Annual Meeting, held in Seattle, Wash., May 1-5, 2016.
Handy Eye ChartTM (reduced size)
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