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Table 1 Preoperative data of both treatment groups

From: Q-value customized versus wavefront-optimized ablation in femtosecond laser-assisted LASIK for myopia and myopic astigmatism: a prospective contralateral comparative study

Parameter

Ablation profile groups

Mean ± SE 95% CI (LB, UB)

P value

Custom-Q profile (n = 40)

WFO profile (n = 40)

UDVA (logMAR)

1.30 ± 0.03 (1.23, 1.36)

1.10 ± 0.05 (1.00, 1.20)

0.009

CDVA (logMAR)

0.28 ± 0.03 (0.22, 0.35)

0.17 ± 0.03 (0.10, 0.20)

0.010

Sphere (D)

− 6.20 ± 0.48 (− 7.15, − 5.23)

− 4.10 ± 0.40 (− 4.90, − 3.30)

0.001

Cylinder (D)

− 1.70 ± 0.20 (− 2.10, − 1.30)

− 1.50 ± 0.20 (− 1.90, − 1.10)

0.489

MRSE (D)

− 7.00 ± 0.48 (− 8.00, − 6.10)

− 4.90 ± 0.40 (− 5.70, − 4.0)

0.001

K1 (D)

43.30 ± 0.24 (42.80, 43.80)

43.30 ± 0.30 (42.80, 43.90)

0.967

K2 (D)

44.80 ± 0.24 (44.30, 45.30)

44.60 ± 0.30 (44.10, 45.20)

0.582

Km (D)

44.00 ± 0.24 (43.60, 44.50)

44.00 ± 0.30 (43.50, 44.50)

0.852

Q value

− 0.20 ± 0.02 (− 0.25, − 0.17)

− 0.20 ± 0.02 (− 0.25, − 0.16)

0.712

Pachy. pupil center (μm)

539.00 ± 4.50 (530, 548)

539.00 ± 4.50 (530, 548)

0.973

Mid-peripheral Pachy. (μm)

572. 00 ± 4.80 (562, 582)

574.00 ± 4.70 (564, 583)

0.744

Degree of myopia, eyes n (%)

 Mild (≤ − 3.00 D)

 Moderate (− 3.00 to − 6.00 D)

 High (≥ − 6.00 D)

6 (15.0%)

9 (22.5%)

25 (62.5%)

12 (30.0%)

15 (37.5%)

13 (32.5%)

 
  1. SE = standard error of the mean; CI = confidence interval; LB = lower bound; UB = upper bound; UDVA = uncorrected distance visual acuity; CDVA = corrected distance visual acuity; logMAR = logarithms of minimum angle of resolution; MRSE = manifest refraction spherical equivalent; D = diopter; K1 = flat keratometry; K2 = steep keratometry; Km = mean keratometry; Pachy. = pachymetry; WFO = wavefront-optimized. P values in bold indicate statistical significance