Document Detail

Lanthony's new color test. IV. Neutral zone and neutral grays.
MedLine Citation:
PMID:  6976544     Owner:  NLM     Status:  MEDLINE    
The classification of neutral grays is helpful for the differential diagnosis of color vision defects, especially when anomaloscopic examination is not possible. In congenital color vision defects the PR, RP region of the spectrum appears 'dark' to protan-defective subjects and 'light' to deutan-defective subjects. Acquired color vision defects have a common base type, the type III blue-yellow defect. The defect develops depending on the site of the primary lesion and also on the fixation mode. Classification of neutral grays may help in differentiating optic nerve diseases from retinal diseases; when visual functions become mediated by rods, sensitivity shifts and the BV, B region of the spectrum will appear relatively 'light' to the patient.
A Pinckers
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Ophthalmologica. Journal international d'ophtalmologie. International journal of ophthalmology. Zeitschrift für Augenheilkunde     Volume:  184     ISSN:  0030-3755     ISO Abbreviation:  Ophthalmologica     Publication Date:  1982  
Date Detail:
Created Date:  1982-03-13     Completed Date:  1982-03-13     Revised Date:  2007-09-17    
Medline Journal Info:
Nlm Unique ID:  0054655     Medline TA:  Ophthalmologica     Country:  SWITZERLAND    
Other Details:
Languages:  eng     Pagination:  51-7     Citation Subset:  IM    
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MeSH Terms
Color Perception Tests / methods*
Color Vision Defects / classification,  diagnosis*
Optic Nerve Diseases / diagnosis
Retinal Diseases / diagnosis

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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