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The effect of age, size of target, and cognitive factors on accommodative responses of children with Down syndrome.

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

Woodhouse, J M, Cregg, M, Gunter, H L, Sanders, D P, Saunders, Kathryn, Pakeman, V H, Parker, M, Fraser, W I and Sastry, P (2000) The effect of age, size of target, and cognitive factors on accommodative responses of children with Down syndrome. Investigative ophthalmology & visual science, 41 (9). pp. 2479-85. [Journal article]

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URL: http://www.iovs.org/

Abstract

PURPOSE: To investigate possible factors that may be implicated in the poor accommodative responses of individuals with Down syndrome. This article evaluates the effect of age, angular size of target, and cognitive factors on accommodation. METHODS: Seventy-seven children with Down syndrome who are participating in an ongoing study of visual development were assessed. One hundred thirty-one developmentally normal children took part in a previous study and provided control data. Accommodation was measured using a modified Nott dynamic retinoscopy technique. RESULTS: Children with Down syndrome showed considerably poorer accommodative responses than normally developing children. No target used in the present study produced an improved response in children with Down syndrome. Age, angular subtense of target, and cognitive factors could not fully account for the poor accommodation in children with Down syndrome. CONCLUSIONS: Poor accommodation is a common feature of Down syndrome, regardless of the target used. The etiology of the deficit has yet to be established. It is imperative that educators and clinicians are aware that near vision is out of focus for these 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:1053
Deposited By:Professor Kathryn Saunders
Deposited On:25 Nov 2009 16:51
Last Modified:18 Jan 2010 14:36

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