PMID: 8950399Oct 1, 1996Paper

Visual acuity assessment of children with neurological impairment using grating and vanishing optotype acuity cards

Acta Ophthalmologica Scandinavica
R T MackieD L McCulloch

Abstract

We have compared the testability and acuity thresholds achieved with vanishing optotype acuity cards and traditional grating acuity cards when used to examine children with neurological impairment. These children encompass a wide range of ages and abilities and it may be desirable to use the two types of cards for acuity assessment. Subjects were a diverse group of children (n = 91; 8 months-19 years) whose learning ability ranged from normal to severe disability. There was no significant difference between the individual success rates for the two sets of cards (grating 91% (n = 61) vanishing optotype 89% (n = 59)). Over a wide range of acuities (0 to 2.0 LogMAR) the mean difference between acuity thresholds did not differ significantly from zero (p = 0.24). Ninety-three percent of acuity estimates agreed to within +/- 0.50 LogMAR units. The results indicate that the two acuity tests could be used interchangeably in clinical populations of children with neurological impairment.

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Citations

Feb 14, 2009·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Catherine JohnsonD Luisa Mayer
Jan 5, 2006·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·W N Charman
Dec 21, 2006·Neuroscience and Behavioral Physiology·S A KoskinYu E Shelepin
Aug 2, 2013·Clinical & Experimental Optometry : Journal of the Australian Optometrical Association·Nicola S Anstice, Benjamin Thompson

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