Skip to main content

Table 1 Demographics and preoperative data of the study population

From: Comparison of ocular higher-order aberrations after SMILE and Wavefront-guided Femtosecond LASIK for myopia

Mean ± SD (range)

WFG FS-LASIK

SMILE

P value a

Number of eyes

26

39

-

Age (years)

24 ± 5

22 ± 4

0.186b

Gender (% female)

40%

33%

0.542

UDVA (logMAR)

0.99 ± 0.37 (0.30,1.70)

0.96 ± 0.28 (0.52,1.40)

0.737

CDVA (logMAR)

0.03 ± 0.06 (0.00,0.22)

0.01 ± 0.03 (0.00,0.10)

0.076

Sphere (D)

−4.20 ± 2.65 (−10.00,0.00)

−4.41 ± 1.23 (−6.50,-2.00)

0.710b

Cylinder (D)

−2.66 ± 1.12 (−5.50,-1.00)

−2.26 ± 0.73 (−4.00,-1.00)

0.102b

SE (D)

-5.54 ± 2.40 (−10.50,-2.00)

−5.53 ± 1.24 (−8.00,-2.88)

0.998b

Ocular aberration (μm)

 Z3 −3

0.062 ± 0.063 (0.001,0.211)

0.067 ± 0.047 (0.006,0.206)

0.249

 Z3 −1

0.074 ± 0.045 (0.000,0.203)

0.088 ± 0.068 (0.001,0.277)

0.738

 Z3 1

0.049 ± 0.043 (0.001,0.168)

0.034 ± 0.029 (0.001,0.126)

0.194

 Z3 3

0.040 ± 0.037 (0.000,0.163)

0.043 ± 0.035 (0.000,0.147)

0.698

 Z4 0

0.047 ± 0.027 (0.005,0.108)

0.056 ± 0.034 (0.001,0.116)

0.280b

 Total HOA

0.158 ± 0.055 (0.078,0.281)

0.166 ± 0.063 (0.057,0.370)

0.659

  1. CDVA = corrected distance visual acuity (with spectacles); UDVA = uncorrected distance visual acuity; SE = spherical equivalent; a P values were based on Mann-Whitney test for non-normally distributed data unless otherwise specified; b P values were based on Student t-test for normally distributed data