Table 1.

Percent decrease in P1 wave amplitude in central and peripheral retina from euglycemia to hypoglycemia

Subject	Mean glucose during hypoglycemia (mg/dl)	Central retina (% reduction)	Peripheral retina (% reduction)
Normal volunteers
1	48	37	17
2	50	19	12
3	50	6	3
4	50	17	6
5	50	9	4
6	51	5	5
7	50	9	9
Mean +/− SEM (p = 0.050)	50 +/− 0.34	14.57 +/−4.24	8.00 +/− 1.90
Type 1 diabetes
1	49	24	19
2	56	19	7
3	51	11	6
4	55	11	5
5	52	10	1
Mean +/− SEM (p = 0.050)	53 +/− 1.3	14.75 +/− 2.72	7.87 +/− 2.98

^*Normal volunteers: euglycemia: mean glucose 99 mg/dl

Type 1 diabetes: euglycemia: mean glucose 98 mg/dl