Document Detail

Red-green mixture thresholds in congenital and acquired color defects.
MedLine Citation:
PMID:  3492073     Owner:  NLM     Status:  MEDLINE    
A color television display was used to measure thresholds for mixtures of red and green on a white background; red and green components could be either incremental, decremental or zero. Ellipses are fitted to a plot of green contrast as a function of red contrast, and it is argued that the length of the ellipse is a measure of red-green color discrimination and the width of the ellipse is a measure of luminance discrimination. It is shown that the technique reliably distinguishes normals from congenital color defectives and also protan from deutan subjects. For some cases of acquired color defects (e.g. optic neuritis), there is a roughly equal loss of color and luminance discrimination whereas, in other cases (e.g., hereditary optic atrophies), the loss of color discrimination is much greater than the loss of luminance discrimination.
K L Sellers; G M Chioran; S J Dain; S C Benes; M Lubow; K Rammohan; P E King-Smith
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Vision research     Volume:  26     ISSN:  0042-6989     ISO Abbreviation:  Vision Res.     Publication Date:  1986  
Date Detail:
Created Date:  1987-02-04     Completed Date:  1987-02-04     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  0417402     Medline TA:  Vision Res     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  1083-97     Citation Subset:  IM    
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MeSH Terms
Color Perception / physiology
Color Vision Defects / physiopathology*
Discrimination (Psychology) / physiology
Optic Atrophy / physiopathology
Optic Neuritis / physiopathology
Sensory Thresholds / physiology
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