Changes of ERG Parameters in Diabetic Retinopathy.
- Author:
Young Keun HAN
1
;
Young Hoon OHN
Author Information
1. Department of Ophthalmology, College of Medicine, Soonchunhyang University.
- Publication Type:Original Article
- Keywords:
Diabetic retinopathy;
Electroretinography;
Significant parameters
- MeSH:
Diabetic Retinopathy*;
Electroretinography
- From:Journal of the Korean Ophthalmological Society
2000;41(1):149-155
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
The purpose of this study is to evaluate the parameters of electroretinography[ERG]in eyes with diabetic retinopathy. The ERG responses were recorded in 46 normal subjects and 72 diabetic patients.We obtained the values of 12parameters from 5 basic responses and compared the changes of ERG parameters with the stages of diabetic retinopathy. The amplitude of oscillatory potentials decreased progressively from normal to severe nonproliferative diabetic retinopathy[NPDR].The b-wave implicit time of cone response was delayed in eyes with moderate NPDR to high risk proliferative diabetic retinopathy[PDR]. The b-wave amplitude of rod response was reduced in eyes with mild to moderate NPDR.The a-wave amplitude of maximal combined response significantly decreased between severe NPDR and early PDR.
