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Long, R. G.; And Others – Journal of Visual Impairment and Blindness, 1990
The study assessed variations in the indoor and outdoor locomotor mobility of 22 low-vision adults, under normal and reduced illumination. Subjects' visual fields and contrast sensitivities accounted for 39 percent of the variation in mobility performance, whereas their visual acuities were not related to mobility performance. (Author/JDD)
Descriptors: Adults, Evaluation, Lighting, Partial Vision

Schanel-Klitsch, E. – Journal of Visual Impairment and Blindness, 1992
The visual acuity of 8 children, aged 2-7, with low vision and multiple handicaps was effectively tested using the Teller Acuity Cards and a preferential-looking procedure with operant modification. This inexpensive procedure was found to be suitable for at-home testing by itinerant vision specialists in developing countries or rural areas. (DB)
Descriptors: Cost Effectiveness, Multiple Disabilities, Operant Conditioning, Outreach Programs