A study on the relationship of the electroretinographic scotopic b-wave amplitude to flash intensity
- VernacularTitle:视网膜电图b波振幅和刺激光强关系研究
- Author:
Xianqun FAN
- Publication Type:Journal Article
- Keywords:
Electroretinogram
- From:
Ophthalmology in China
1993;0(04):-
- CountryChina
- Language:Chinese
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Abstract:
The dark adapted electroretinogram was recorded in 30 eyes of New Zealand rabbits and 30 normal eyes of human volunteers.With the visual electrophy- siologic recording system,each eye being tested with intensities of a range of 5 log units,to study the intensity-response function of the scotopic b- wave of electroretinogram.It was found that the intensity-response function of the scotopic b-wave was a sigmoidal curve which fitted to the Naka- Rushton Equation:R/Rmax=I~n/(I~n+K~n)only at low to moderate flash luminances:at high flash lumi- nances,a second limb appeared in the function,which represented a complex combination of the rod system response and the cone system response.
