Table 2.

Change in parameters before versus after LASIK

Variables	Preoperative	1 month	6 months	P-value
Overall subjects
UCVA right eye (logMAR)	1.16±0.32	−0.11±0.15	−0.09±0.15	<0.001
Sph right eye (diopter)	−5.90±2.49	−0.39±0.55	−0.46±0.50	<0.001
BUT right eye (seconds)	3.9±1.8	3.0±1.6	–	<0.001
Fluorescein score right eye	0.35±0.72	0.44±0.85	–	0.22
Healthy subjects
UCVA right eye (logMAR)	1.16±0.32	−0.11±0.15	−0.09±0.15	<0.001
Sph right eye (diopter)	−5.89±2.49	−0.39±0.55	−0.46±0.50	<0.001
BUT right eye (seconds)	3.9±1.8	3.0±1.6	–	<0.001
Fluorescein score right eye	0.35±0.72	0.44±0.85	–	0.22

Abbreviations: LASIK, laser in situ keratomileusis; UCVA, uncorrected visual acuity; logMAR, logarithm of the minimum angle of resolution; Sph, spherical equivalent; BUT, tear break-up time.