Age group (Year)

Y-coma

X-coma

Y-second Astigmatism

SA

X-second Astigmatism

16-25

-0.018±0.088

-0.003±0.149

-0.003±0.059

0.180±0.083

-0.003±0.035

26-35

-0.013±0.158

-0.013±0.153

-0.020±0.028

0.199±0.106

0.010±0.090

36-45

-0.022±0.098

-0.028±0.074

-0.050±0.015

0.304±0.115

-0.016±0.113

46-55

-0.026±0.000

-0.056±0.014

-0.013±0.153

0.317±0.015

0.021±0.006

56-65

-0.091±0.251

0.166±0.479

-0.030±0.149

0.325±0.156

0.073±0.122

>65

-0.101±0.330

0.146±0.667

-0.035±0.024

0.322±0.000

0.027±0.152

Total

-0.033±0.149

0.012±0.257

-0.030±0.102

0.267±0.130

0.032±0.083

Table 6: Data of higher-order aberration of total corneal surface at each age group (um, meanąSD).