Document Detail


Resolving power of the human visual system to monochromatic stimuli.
MedLine Citation:
PMID:  8022599     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The resolving power in monocular, foveal vision was found to depend on the size of a white light source made of two white rectangles separated by vertical black bar. The question arises whether the wavelength of light influences this dependence. An experiment was done on three subjects using six monochromatic lights the range 450-625 nm, and white light for control measurements. The diagram of the dependence of the minimal angle of resolution on the source size takes the shape of a biphasic curve, i.e. decreasing and constant function. The wavelength was found to have no impact on the curve shape or values. The data points obtained for white light coincide with those for monochromatic lights. The results confirm a thesis that all three colour mechanisms in the human visual system are stimulated and are active in spatial summation processes, but to a degree conditioned by a spectral sensitivity of the particular colour apparatus. It was confirmed that all colour mechanisms have potentially the same acuity but the axial chromatic aberration causes observed reduction of acuity.
Authors:
P Koczorowski; B Kedzia; M Niworowski; S Kucharski
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists)     Volume:  14     ISSN:  0275-5408     ISO Abbreviation:  Ophthalmic Physiol Opt     Publication Date:  1994 Apr 
Date Detail:
Created Date:  1994-08-03     Completed Date:  1994-08-03     Revised Date:  2006-11-07    
Medline Journal Info:
Nlm Unique ID:  8208839     Medline TA:  Ophthalmic Physiol Opt     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  167-75     Citation Subset:  IM    
Affiliation:
Department of Optometry, Karol Marcinkowski University of Medical Sciences, Poznań, Poland.
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MeSH Terms
Descriptor/Qualifier:
Adult
Color Perception / physiology*
Female
Humans
Light
Male
Models, Neurological
Psychometrics
Spectrophotometry
Vision, Monocular / physiology
Visual Acuity / physiology*

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


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