Document Detail


Growth of the visual system in the African cichlid fish, Haplochromis burtoni. Optics.
MedLine Citation:
PMID:  4013083     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
We have measured the chromatic aberration and optical resolution of the lens of the African cichlid fish, Haplochromis burtoni as a function of growth. We found that in H. burtoni, lenses of all sizes have a longitudinal chromatic aberration of ca 1.9% of the focal length. The resolution of the lens increases as the lens grows larger, presumably because diffraction effects decrease and any imperfections in the lens become relatively less significant. We found the lens in H. burtoni is very nearly diffraction limited so that a small lens (0.59 mm) has a resolution of 289 sec of arc and a large lens (2.90 mm) has a resolution of 66 sec of arc in red light (604 nm). This resolution is nearly ten times greater than can be resolved by the cone matrix.
Authors:
R D Fernald; S E Wright
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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:  25     ISSN:  0042-6989     ISO Abbreviation:  Vision Res.     Publication Date:  1985  
Date Detail:
Created Date:  1985-08-20     Completed Date:  1985-08-20     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0417402     Medline TA:  Vision Res     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  155-61     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Animals
Biometry
Color
Fishes / growth & development*,  physiology
Lens, Crystalline / growth & development*,  physiology
Male
Optics and Photonics
Photoreceptor Cells / physiology
Refraction, Ocular
Retina / physiology
Vision, Ocular*
Visual Acuity
Grant Support
ID/Acronym/Agency:
EY 02284/EY/NEI NIH HHS; EY 05693/EY/NEI NIH HHS; GM 07257/GM/NIGMS NIH HHS

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


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