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Table 1 Mean changes in visual acuity over 12- month follow-up (n = 31, x ± s)

From: Topography-guided corneal surface laser ablation combined with simultaneous accelerated corneal collagen cross-linking for treatment of keratoconus

 

Preoperative

1-month

6-month

12-month

F

P

UDVA(LogMAR)

0.79 ± 0.33

0.76 ± 0.23

0.70 ± 0.27

0.71 ± 0.27

2.016

0.134

BSCDVA(LogMAR)

0.32 ± 0.20

0.24 ± 0.24*

0.16 ± 0.22*#

0.15 ± 0.14*#

13.495

< 0.001

  1. Abbreviations: UDVA uncorrected distance visual acuity; BSCDVA best spectacle corrected distance visual acuity
  2. * significant difference compared with preoperative baseline (P < 0.05)
  3. # significant difference compared with postoperative 1-month (P < 0.05)