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The Kay Picture Test is the only fully researched and validated picture visual acuity test that provides consistent, subjective visual acuity earlier than letter and symbol tests.
In a comprehensive research study carried out by Liverpool University Directorate of Orthoptics and Vision Science and a number of clinical orthoptic departments across the UK and The Retina Foundation of the Southwest, USA, the Kay Picture Test was shown to be valid and repeatable within the limits of current gold standards with high testability1,2.
Recent normative data collected for the redesigned Kay Picture Visual Acuity Test shows that those tested with the Kay Picture Test in comparison to previously published norms of HOTV and Lea Symbols, have more consistent mean visual acuity scores across all ages and less variability in acuities (numerically lower standard deviations).3
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