Table 1. Patient demographics and biometric parameters.

Parameters	Mean±SD (range)
Age	59.48±12.09 (24-81)
Female	66 (64.71%)
Right eye	46 (45.10%)
Follow-up time (3- <6mo)	52 (50.98%)
Follow-up time (6- <12mo)	30 (29.41%)
Follow-up time (12-24mo)	20 (19.61%)
With the rule astigmatism	64 (62.74%)
Aginst the rule astigmatism	33 (32.35%)
Oblique astigmatism	5 (4.90%)
Central corneal thickness, µm	547.41±30.39 (468-618)
Periph cornea thickness, µm	639.50±43.67 (491-751)
Corneal horizontal diameter, µm	11.40±0.42 (10.3-12.2)
Preoperative corneal astigmatism, D	1.23±0.38 (0.76-2.9)
Postoperative corneal astigmatism, D	0.76±0.39 (0.11-2.09)
Postoperative refractive astigmatism, D	0.73±0.55 (0-2.62)
Preoperative corneal higher-order aberrations, µm	0.17±0.08 (0.05-0.44)
Postoperative corneal higher-order aberrations, µm	0.24±0.11 (0.09-0.66)
Arc incision length	36.07±9.39 (20-60)

D: Diopter; SD: Standard deviation.