Table 1 Comparison of K1, K2, AL, ACD, LT, CCT, PS, WTW, AL/CR, and SER in different geographic groups.

From: Comparative analysis of refractive errors and ocular biological parameters among pre-myopic adolescents across different age groups and geographical regions

 

S

(n = 1904)

W

(n = 1716)

N

(n = 1240)

E

(n = 1535)

C

(n = 1119)

K1 (D)

41.96 ± 1.27

42.01 ± 1.28

42.15 ± 1.31

41.97 ± 1.26

41.95 ± 1.29

K2 (D)

42.94 ± 1.38

43.05 ± 1.39

43.26 ± 1.45

43.03 ± 1.37

43.04 ± 1.41

AL (mm)

23.96 ± 0.66

23.90 ± 0.66

23.86 ± 0.69

23.95 ± 0.69

23.95 ± 0.65

ACD (mm)

3.63 ± 0.24

3.60 ± 0.27

3.58 ± 0.27

3.64 ± 0.23

3.55 ± 0.31

LT (mm)

3.60 ± 0.20

3.59 ± 0.21

3.60 ± 0.19

3.59 ± 0.20

3.58 ± 0.20

CCT (μm)

543.38 ± 32.26

538.26 ± 33.40

542.21 ± 31.89

540.49 ± 32.43

542.44 ± 32.80

PS (mm)

5.34 ± 0.78

5.94 ± 0.92

5.92 ± 0.84

5.77 ± 0.81

5.38 ± 0.83

WTW (mm)

12.11 ± 0.50

12.03 ± 0.47

12.10 ± 0.52

12.06 ± 0.44

12.03 ± 0.54

AL/CR

3.01 ± 0.06

3.01 ± 0.06

3.02 ± 0.06

3.01 ± 0.06

3.01 ± 0.06

SER (D)

0.25 ± 0.37

0.21 ± 0.37

0.20 ± 0.37

0.18 ± 0.36

0.14 ± 0.35