Document Detail

Full-spectrum cone sensitivity functions for X-chromosome-linked anomalous trichromats.
MedLine Citation:
PMID:  1527649     Owner:  NLM     Status:  MEDLINE    
We derived the cone fundamentals for X-chromosome-linked anomalous trichromats for the wavelength range of 400-700 nm. Pigment templates were constructed from the cone fundamentals of normal trichromats after correction for ocular media absorption. The resultant retinal-level sensitivities had small irregularities in the short-wavelength region that were smoothed. The pigment templates, expressed as quantal sensitivities, were then shifted on a frequency abscissa to solve for the lambda max of the pigments of anomalous trichromats needed to predict average anomaloscope matching data. We found that the protanomalous M- and L'-cone pigments are separated by 10 nm and the deuteranomalous M'- and L-cone pigments are separated by 6 nm (rounded to the nearest nanometer), where M and L indicate middle- and long-wavelength sensitive, respectively. The triads of peak wavelengths for the corneal energy-based sensitivities were as follows: normal: 440, 543, and 566 nm; protanomalous: 440, 543, and 553 nm; and deuteranomalous: 440, 560, and 566 nm.
P DeMarco; J Pokorny; V C Smith
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Journal of the Optical Society of America. A, Optics and image science     Volume:  9     ISSN:  0740-3232     ISO Abbreviation:  J Opt Soc Am A     Publication Date:  1992 Sep 
Date Detail:
Created Date:  1992-10-16     Completed Date:  1992-10-16     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  8402086     Medline TA:  J Opt Soc Am A     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1465-76     Citation Subset:  IM    
Visual Sciences Center, University of Chicago, Illinois 60637.
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MeSH Terms
Color Vision Defects / genetics*,  physiopathology
Linkage (Genetics)*
Photoreceptor Cells / physiopathology*
Retinal Pigments / chemistry*
Sensory Thresholds
X Chromosome*
Grant Support
Reg. No./Substance:
0/Retinal Pigments

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