From: Functional assessment of early retinal changes in diabetic patients without clinical retinopathy using multifocal electroretinogram
Areas of retina
Correlation (r)
p value
Ring 1
−0.731
< 0.001
Ring 2
−0.761
Ring 3
−0.804
Ring 4
−0.285
0.223
Ring 5
−0.605
0.005