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Title: Colour contrast thresholds are normal in functional amblyopia
Authors: Mangelschots, E ×
Beerlandt, N
Janssens, Hilde
Spileers, Werner #
Issue Date: Dec-1996
Series Title: Eye (London, England) vol:10 ( Pt 4) pages:479-84
Abstract: We evaluated colour contrast thresholds in patients with unilateral functional amblyopia. A computer-controlled colour vision test was used to determine colour contrast thresholds along a blue-yellow tritan axis. Prior to the threshold measurement, a heterochromatic flicker brightness test was performed to ensure isoluminance between the test stimulus and the background for every subject individually. Luminance contrast thresholds were also measured using the same computer-based system. Twenty amblyopic patients were tested. All showed normal tritan colour contrast thresholds both for their amblyopic eye and non-amblyopic fellow eye. Luminance contrast thresholds were elevated in all 6 refractive amblyopic eyes, in 4 of 9 strabismic eyes and in 2 of 5 mixed amblyopic eyes. Colour contrast thresholds are normal in functional amblyopia (with central fixation). Whenever elevated tritan colour contrast thresholds are found in patients with a decreased visual acuity, other causes of visual impairment are to be evaluated.
ISSN: 0950-222X
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Research Group Ophthalmology
× corresponding author
# (joint) last author

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