Table 3 The normal range of SI1 and SI2 in each meridian.

From: Quantitative analysis of iris surface smoothness in normal population

OD

SI_1

SI_2

Mean

Standard deviation

OD

Mean

Standard deviation

Axis

 180T

0.836

0.040

0 N

0.814

0.040

 191T

0.813

0.041

11 N

0.793

0.043

 203T

0.813

0.041

23 N

0.800

0.041

 214T

0.812

0.039

34 N

0.810

0.033

 225T

0.811

0.040

45 N

0.812

0.037

 236T

0.815

0.036

56 N

0.810

0.039

 248T

0.816

0.040

68 N

0.816

0.041

 259T

0.818

0.042

79 N

0.817

0.040

 270I

0.838

0.047

90 S

0.830

0.044

 281I

0.803

0.054

101 S

0.806

0.044

 293I

0.797

0.050

113 S

0.813

0.037

 304I

0.800

0.041

124 S

0.817

0.036

 315I

0.810

0.036

135 S

0.818

0.043

 326I

0.809

0.042

146 S

0.815

0.035

 338I

0.808

0.038

158 S

0.816

0.043

 349I

0.801

0.036

169 S

0.819

0.036