As there is uncertainty surrounding black light safety, caution should be exercised in using it as a vision training tool with visually handicapped students--particularly aphakic and albino students, young students, and those taking photosensitizing drugs. The use of ultraviolet-blocking filters or lenses is recommended during black light…

Nineteen people (ages 11-21) with profound mental retardation and multiple handicaps were given visual stimulation in a blacklight environment. Results indicated that students performed better under conditions of blacklight than normal light for tracking and reaching, as the blacklight removed distracting stimuli and exaggerated critical features.…