Table 1. Preoperative demographics and diagnosis of the study population.

	FLAK group	Conventional PK group	P value
No. of patients	20	20	-
No. of eyes	20	20	-
Age	63.7±23.2 years (range, 17 to 88 years)	64.3±14.8 years (range, 38 to 85 years)	0.54
Gender (% female)	40.0	50.0	0.53
Preoperative UCVA (logMAR)	1.73±0.48 (range, 1.00 to 3.00)	1.77±0.67 (range, 0.52 to 3.00)	0.97
Preoperative BSCVA (logMAR)	1.45±0.70 (range, 0.40 to 3.00)	1.65±0.77 (range, 0.40 to 3.00)	0.58
Primary disease
Keratoconus	6 (30%)	4 (20%)	0.93
Bullous keratopathy	5 (25%)	5 (25%)
Prior ulcer/scarring	4 (20%)	6 (30%)
Corneal dystrophy	2 (10%)	3 (15%)
Fuchs’ dystrophy	1 (5%)	1 (5%)
Herpetic disease	2 (10%)	1 (5%)

FLAK = femtosecond laser assisted penetrating keratoplasty, PK = penetrating keratoplasty, UCVA = uncorrected visual acuity, logMAR = logarithm of the minimal angle of resolution, BSCVA = best spectacle-corrected visual acuity.