Document Detail

The intensity of the light reflex on retinal arteries and veins.
MedLine Citation:
PMID:  3811866     Owner:  NLM     Status:  MEDLINE    
The intensity profiles of the central light streak on various sized retinal vessels were measured by a computerized high quality scanning microphotometer. From the fundus photographs in 40 young men 240 arteries and 240 veins were analysed, and light streaks were found on 171 arterial and 170 venous sites. Differences in reflected intensities between arteries and veins and between small and large vessels were studied. In the whole range of vessels measured (50-200 microns) significantly higher intensities were found on arteries compared to veins (P less than 0.01). Large vessels (100-200 microns) reflected the light more intensely than small vessels (50-99 microns) (P less than 0.001). Variations in haemodynamics of flow and in physical properties of the streaming erythrocytes might account for the reflectivity differences between arteries and veins.
O Brinchmann-Hansen; L Sandvik
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Acta ophthalmologica     Volume:  64     ISSN:  0001-639X     ISO Abbreviation:  Acta Ophthalmol (Copenh)     Publication Date:  1986 Oct 
Date Detail:
Created Date:  1987-03-10     Completed Date:  1987-03-10     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0370347     Medline TA:  Acta Ophthalmol (Copenh)     Country:  DENMARK    
Other Details:
Languages:  eng     Pagination:  547-52     Citation Subset:  IM    
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MeSH Terms
Retinal Artery / anatomy & histology,  physiology*
Retinal Vein / anatomy & histology,  physiology*

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