Table 5 Comparison of corneal topographic indices between diabetics with and without DR

K1 (D)

44.14 ± 1.63

44.47 ± 1.79

0.217

K2 (D)

44.99 ± 1.72

45.25 ± 1.89

0.465

Mean K (D)

44.57 ± 1.64

44.86 ± 1.82

0.323

Kmax (D)

46.00 ± 2.03

45.92 ± 2.06

0.606

Q-value

-0.43 ± 0.18

-0.42 ± 0.15

0.857

ISV

19.94 ± 11.23

17.35 ± 8.24

0.016

IVA (mm)

0.16 ± 0.11

0.13 ± 0.06

0.022

KI

1.02 ± 0.04

1.02 ± 0.02

0.786

CKI

1.00 ± 0.01

1.00 ± 0.01

0.121

IHA (µm)

6.23 ± 5.85

5.00 ± 3.92

0.262

IHD (µm)

0.02 ± 0.02

0.01 ± 0.01

0.053

PPImin

0.74 ± 0.25

0.75 ± 0.15

0.145

PPIavg

1.02 ± 0.27

1.08 ± 0.15

< 0.001

PPImax

1.33 ± 0.40

1.41 ± 0.22

< 0.001

I-S value

-0.04 ± 1.01

0.07 ± 0.74

0.262

ARC (mm)

7.60 ± 0.31

7.54 ± 0.29

0.187

PRC (mm)

6.16 ± 0.28

6.09 ± 0.28

0.266