Table 1.

Baseline Characteristics by Groups

Parameter	Entire patients	PRK	Femto-LASIK	P value
Age: Mean ± SD	26.53 ± 3.95	26.67 ± 4.46	26.39 ± 3.40	0.69
Mean sphere (D) ± SD	-4.77 ± 0.94	-4.62 ± 0.92	-4.90 ± 0.95	0.10
Mean cylinder (D) ± SD	-1.01 ± 0.75	-0.87 ± 0.63	-1.13 ± 0.84	0.57
Mean CDVA ( LogMar) ± SD	0.00 ± 0.02	0.00 ± 0.01	0.00 ± 0.02	0.45

CDVA = Corrected distance visual acuity; UDVA = uncorrected distance visual acuity