Comparison of functional mobility performance with clinical vision measures in simulated Retinitis Pigmentosa

Haymes, Sharon, Guest, Daryl, Heyes, Anthony and Johnston, Alan 1994, Comparison of functional mobility performance with clinical vision measures in simulated Retinitis Pigmentosa, Optometry and vision science, vol. 71, no. 7, pp. 442-453.

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Title Comparison of functional mobility performance with clinical vision measures in simulated Retinitis Pigmentosa
Author(s) Haymes, Sharon
Guest, Daryl
Heyes, Anthony
Johnston, Alan
Journal name Optometry and vision science
Volume number 71
Issue number 7
Start page 442
End page 453
Total pages 12
Publisher Lippincott Williams & Wilkins
Place of publication Philadelphia, Pa.
Publication date 1994-07
ISSN 1040-5488
1538-9235
Keyword(s) retinitis pigmentosa
mobility performance
clinical vision measures
low vision
retinal illuminance
Summary Simulations of retinitis pigmentosa (RP) under various conditions of retinal illuminance were designed and investigated in order that they might be used in the mobility training of clients with early RP. Goggles incorporating a 2.5 neutral density (ND) filter with a 0.5-mm diameter pinhole were found to be a potentially useful simulation device for this purpose. This investigation also compared mobility performance with clinical vision measures under photopic, mesopic, and scotopic conditions of retinal illuminance. Although none of the clinical vision measures we used was entirely predictive of mobility performance, some measures were better predictors than others. For a severe constriction of the visual field and decreasing retinal illuminance, both edge contrast sensitivity and visual acuity, measured outdoors, accounted for a greater proportion of the variance in mobility performance than did low contrast visual acuity measured under the same circumstances. The same clinical vision measures, taken in-doors, were of no value in predicting outdoor mobility performance.
Language eng
Field of Research 119999 Medical and Health Sciences not elsewhere classified
Socio Economic Objective 970111 Expanding Knowledge in the Medical and Health Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©1994, American Academy of Optometry
Persistent URL http://hdl.handle.net/10536/DRO/DU:30047587

Document type: Journal Article
Collection: School of Medicine
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