Age group (Year)

Y-coma

X-coma

Y-second Astigmatism

SA

X-second Astigmatism

16-25

-0.010±0.088

-0.028±0.205

-0.003±0.059

-0.109±0.035

-0.004±0.020

26-35

-0.019±0.036

-0.020±0.058

-0.012±0.018

-0.125±0.057

0.006±0.025

36-45

-0.020±0.014

-0.009±0.049

-0.014±0.065

-0.121±0.033

-0.002±0.014

46-55

-0.014±0.018

-0.021±0.030

-0.075±0.058

-0.160±0.042

0.005±0.006

56-65

0.025±0.070

0.068±0.130

-0.035±0.027

-0.131±0.063

0.000±0.031

>65

0.020±0.098

0.060±0.001

-0.038±0.013

-0.105±0.005

0.008±0.050

Total

-0.009±0.055

0.002±0.078

-0.000±0.031

-0.126±0.088

0.002±0.031

Table 5: Data of higher-order aberration of posterior corneal surface at each age group (μm, mean±SD).