Evaluation of laser in situ keratomileusis for myopic correction performed under thin flaps

Table 1 Preoperative data in the two groups

	Thin flap group(120 mm)n = 75	Thick flap group (150 mm)n = 75	P value1
Sphere (D)
Mean ± SD	-5.0 ± 1.48	-3.0 ± 2.18	0.0701
Range	-2.0 to -14.0	-1.25 to -12.0
Cylinder (D)
Mean ± SD	-1.0 ± 1.21	-1.0 ± 1.85	0.0604
Range	0.0 to -5.0	0.0 to -3.0
Spherical equivalent (D)
Mean ± SD	-8.0 ± 4.06	-7.75 ± 2.37	0.8063
Range	-2.0 to -15.0	-1.5 to -13.0
Pachymetry (mm)
Mean ± SD	530 ± 35.88	545 ± 32.7	0.00062
Range	450 to 625	495 to 634
Keratometric value
Mean ± SD	43.62 ± 1.3	44.72 ± 1.6	0.01222
Range	40.0 to 47.1	40.80 to 47.50

¹Unpaired t test;

²Significant P value.