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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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
|Deposited By:||Professor Kathryn Saunders|
|Deposited On:||25 Nov 2009 16:54|
|Last Modified:||18 Jan 2010 15:27|
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