Mobility of people with retinitis pigmentosa as a function of vision and psychological variables.
We investigated the mobility performance of subjects with retinitis pigmentosa (RP) as a function of clinical measures of residual vision and psychological variables. We found a highly significant correlation between clinical measures of residual vision and mobility. Pelli-Robson contrast sensitivity and residual visual field together explained 64% of the variance in mobility performance in an indoor shopping mall. We suggest a simple new clinical method of scoring the visual field for predicting mobility performance, the RP Concentric Field Rating. The RP Concentric Field Rating alone explained 60% of the variance in mobility performance. In spite of expectations derived from reading the recent literature, we did not find a significant correlation between psychological variables and mobility performance in a group of subjects with RP.
Victorian College of Optometry, Melbourne, Australia.
S
S
Haymes
D
D
Guest
A
A
Heyes
A
A
Johnston
D000293:Adolescent; D000328:Adult; D000368:Aged; D015350:Contrast Sensitivity / Q000502:physiology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009068:Movement / Q000502:physiology*; D010552:Personality Assessment; D011597:Psychomotor Performance; D012174:Retinitis Pigmentosa / Q000503:physiopathology*; D015354:Vision, Low / Q000503:physiopathology*; D014785:Vision, Ocular / Q000502:physiology*; D014792:Visual Acuity / Q000502:physiology; D014794:Visual Fields