Table 2 Comparison of corneal topographic indices between diabetic and non-diabetic groups

K1 (D)

44.19 ± 1.66

38.70 to 52.40

44.19 ± 1.59

37.90 to 49.90

0.826

K2 (D)

45.03 ± 1.75

40.70 to 57.10

45.03 ± 1.70

39.20 to 51.10

0.808

Mean K (D)

44.61 ± 1.67

39.70 to 54.75

44.61 ± 1.61

38.55 to 50.50

0.848

Kmax (D)

45.99 ± 2.04

41.81 to 64.52

46.00 ± 1.94

40.38 to 54.69

0.843

Q-value

-0.43 ± 0.17

-1.62 to 0.16

-0.42 ± 0.89

-3.49 to 3.89

0.466

ISV

19.56 ± 10.87

5.00 to 113.00

18.61 ± 8.75

6.00 to 94.00

0.210

IVA (mm)

0.16 ± 0.10

0.03 to 1.19

0.15 ± 0.08

0.03 to 0.93

0.100

KI

1.02 ± 0.04

0.84 to 1.24

1.02 ± 0.03

0.90 to 1.14

0.405

CKI

1.00 ± 0.01

0.92 to 1.11

1.00 ± 0.01

0.92 to 1.05

0.613

IHA (µm)

6.05 ± 5.62

0.00 to 56.50

5.95 ± 6.09

0.00 to 85.00

0.709

IHD (µm)

0.02 ± 0.01

0.00 to 0.14

0.02 ± 0.01

0.00 to 0.13

0.353

PPImin

0.74 ± 0.24

0.20 to 2.73

0.72 ± 0.26

-2.46 to 3.60

0.186

PPIavg

1.03 ± 0.26

0.55 to 3.05

1.00 ± 0.25

0.00 to 3.90

0.019

PPImax

1.34 ± 0.38

0.70 to 4.51

1.31 ± 0.44

0.75 to 6.70

0.010

I-S value

-0.02 ± 0.97

-5.34 to 5.50

-0.04 ± 0.89

-3.49 to 3.89

0.924

ARC (mm)

7.60 ± 0.31

5.76 to 9.54

7.59 ± 0.28

6.72 to 9.09

0.930

PRC (mm)

6.15 ± 0.28

4.17 to 7.03

6.16 ± 0.26

4.86 to 6.99

0.606