Comparison of Corneal Densitometry and Visual Quality after Small Incision Lenticule Extraction (SMILE) and Laser Epithelial Keratomileusis (LASEK): One-Year Comparative Study
Table 1
Characteristics of the study groups.
Characteristics
SMILE group ( eyes)
LASEK group ( eyes)
value
Range
Range
Age (, year)
19 to 40
19 to 45
0.320
Sex (male/female)
8/16
—
10/15
—
0.630
Eye (R/L)
23/23
—
22/24
—
0.835
Preoperative spherical error (D)
-5.00 to -1.75
-5.75 to -1.25
0.506
Preoperative cylinder (D)
-2.50 to 0.00
-3.75 to 0.00
0.133
Preoperative SE (D)
-5.00 to -2.13
-5.88 to -1.25
0.815
UDVA (logMAR)
0.70 to 1.60
0.54 to 1.60
0.107
CDVA (logMAR)
-0.10 to -0.10
-0.10 to -0.10
1.000
IOP (mmHg)
10.00 to 20.00
9.60 to 19.40
0.173
Axial length (mm)
23.61 to 26.67
22.72 to 27.61
0.685
K1f (D)
40.10 to 45.50
40.00 to 46.10
0.254
K2f (D)
41.30 to 47.90
40.70 to 49.30
0.676
K1b (D)
-5.70 to -6.60
-5.70 to -6.70
0.155
K2b (D)
-6.00 to -7.20
-6.00 to -7.30
0.348
Preoperative MCT (μm)
496 to 578
472 to 599
<0.001
Endothelial cell count (/mm2)
2121.3 to 3690.1
2273.8 to 3656.8
0.635
LT/AD (μm)
71 to 122
22 to 102
<0.001
SMILE: small incision lenticule extraction; LASEK: laser epithelial keratomileusis; SD: standard deviation; D: diopters; SE: spherical equivalent; UDVA: uncorrected distance visual acuity; CDVA: corrected distance visual acuity; IOP: intraocular pressure; MCT: minimum corneal thickness; LT: lenticule thickness for SMILE patients; AD: ablation depth for LASEK patients; , significant difference between the SMILE and LASEK groups.
