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

Biomedical Sciences Research Institute Computer Science Research Institute Environmental Sciences Research Institute Nanotechnology & Advanced Materials Research Institute

Mackie, R T, Saunders, Kathryn, Day, R E, Dutton, G N and McCulloch, D L (1996) Visual acuity assessment of children with neurological impairment using grating and vanishing optotype acuity cards. Acta ophthalmologica Scandinavica, 74 (5). pp. 483-7. [Journal article]

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URL: http://www.wiley.com/bw/journal.asp?ref=1755-375X

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.

Item Type:Journal article
Faculties and Schools:Faculty of Life and Health Sciences
Faculty of Life and Health Sciences > School of Biomedical Sciences
Research Institutes and Groups:Biomedical Sciences Research Institute
Biomedical Sciences Research Institute > Vision
ID Code:1060
Deposited By:Professor Kathryn Saunders
Deposited On:25 Nov 2009 16:54
Last Modified:18 Jan 2010 15:27

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