A colour-flicker analysis of visual function in patients with retinal detachment.
Patients with a history of retinal detachment were examined by the following tests: (1) setting of an isoluminant match between yellow and green constituent squares of a checkerboard and (2) measurement of the flicker fusion frequency for a contrast-reversal of this yellow-green pattern. The results suggest that the test may provide useful data for assessing the severity of any damage to a given part of the retina. The fusion frequencies range from over 10 Hz (normal) to about 2 Hz for a severely impaired retina. The data for the relative amounts of red and green light needed to achieve a match rarely show any abnormality; thus, a standard anomaloscope test or pseudoisochromatic plates would not detect these deficiencies.
Fahle
M
M
Universitäts-Augenklinik, Tübingen, Federal Republic of Germany.
Troscianko
T
T
Kreissig
I
I
D000328:Adult; D000368:Aged; D003118:Color Perception / Q000502:physiology*; D003119:Color Perception Tests; D005425:Flicker Fusion / Q000502:physiology*; D006801:Humans; D008875:Middle Aged; D012160:Retina / Q000503:physiopathology; D012163:Retinal Detachment / Q000503:physiopathology*; D014792:Visual Acuity