Results from a simple laser color perimeter.
Stimulus size, chromaticity, adaptation, luminance and local adaptation are more easily controlled when laser light rapidly scans the appropriate portion(s) of the visual field. Adaptation of a Ferree-Rand perimeter to the use of He-Ne laser light gives chromatic and achromatic thresholds of relatively low variance.
D000221:Adaptation, Ocular; D003118:Color Perception; D003119:Color Perception Tests / Q000295:instrumentation*; D006801:Humans; D007834:Lasers; D012684:Sensory Thresholds; D058609:Visual Field Tests / Q000295:instrumentation*; D014794:Visual Fields