Pattern-Reversal Visual Evoked Potentials Tests in Persons with Type 2 Diabetes Mellitus with and without Diabetic Retinopathy

Table 2

The PRVEP tests results of both eyes in each group.

Parameters

Control N = 100 eyes

Group A N = 100 eyes

Group B N = 76 eyes

LSD and P value

60 min PRVEP test

N75 Latency (ms)

68.3 ± 0.67^a

69.4 ± 0.67^ab

71 ± 0.96^b

3.01

P100 Latency (ms)

104.32 ± 0.6^c

108.63 ± 0.58^b

117.5 ± 0.9^a

4.31

P100 Amplitude (μV)

12.6 ± 0.5^a

10.4 ± 0.46^b

8.2 ± 0.46^c

2.14

15 min PRVEP test

N75 Latency (ms)

82.57 ± 0.63

81.8 ± 1.1

79.6 ± 1.3

P100 Latency (ms)

110.4 ± 0.54^c

121.5 ± 0.58^b

127.2 ± 0.45^a

5.7

P100 Amplitude (μV)

15.35 ± 0.73^a

11 ± 0.54^b

7.7 ± 0.55^c

3.05

Values are expressed as mean ± SE. Different letters represent significant difference at ( value < 0.05); LSD: lowest significant difference between the three groups. value between controls and group A; = value between controls and group B; value between group A and group B.