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Visual acuity and accommodation in infants and young children with Down's syndrome.

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

Woodhouse, J M, Pakeman, V H, Saunders, Kathryn, Parker, M, Fraser, W I, Lobo, S and Sastry, P (1996) Visual acuity and accommodation in infants and young children with Down's syndrome. Journal of intellectual disability research : JIDR, 40 ( Pt 1) . pp. 49-55. [Journal article]

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URL: http://www.wiley.com/bw/journal.asp?ref=0964-2633&site=1

Abstract

Accommodation and visual acuity were measured in 53 children with Down's syndrome aged between 12 weeks and 57 months. Results were compared with data for 136 control (typically developing) children aged between 4 weeks and 48 months. Whereas the control children accommodated accurately on near targets, accommodation was defective in 92% of the children with Down's syndrome, and there was no change in accommodative ability with age. On the other hand, visual acuity lay within normal limits for the younger children. Children over the age of 2 years showed a below-normal visual acuity, which is not explained either by refractive error or by the effect of poor accommodation. The data suggest a sudden change in the rate of development of visual acuity which may be associated with physiological changes in the visual cortex. Previously reported defects of accommodation and visual acuity in older children and adults with Down's syndrome are confirmed by our findings in infants and young children.

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:1064
Deposited By:Professor Kathryn Saunders
Deposited On:25 Nov 2009 16:55
Last Modified:18 Jan 2010 15:27

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