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Table 2 BCVA, astigmatism and tomographic values of the three groups preoperatively and after 12 and 24 months

From: Impact of keratoconus stage on outcome after corneal crosslinking

  preop 12 months P value
12 months
24 months P value
24 months
Group I II III I II III   I II III  
BCVA 0.16 ± 0.17 0.26 ± 0.23 0.36 ± 0.14 0.1 ± 0.12 0.23 ± 0.17 0.25 ± 0.11 0.014 0.1 ± 0.14 0.26 ± 0.24 0.26 ± 0.12 0.032
Astigm 3.04 ± 1.7 4.43 ± 2.08 6.67 ± 3.48 2.98 ± 1.61 4.02 ± 2.07 5.77 ± 3.1 0.39 3.08 ± 1.38 3.82 ± 2.01 5.69 ± 2.69 0.023
Kmax 45.4 ± 2 50.3 ± 1.5 55.2 ± 1.5 45.3 ± 2.1 49.2 ± 1.9 53.8 ± 2.1 0.08 45.2 ± 2.2 48.2 ± 3.5 53.9 ± 1.7 0.27
Kmin 42.4 ± 1.7 45.7 ± 1.8 48.6 ± 3.3 42.3 ± 1.8 45 ± 2.3 48 ± 2.7 0.47 42.3 ± 2 44.5 ± 3.7 48.3 ± 2.6 0.65
MCT 483.5 ± 30.7 468.2 ± 31.1 450.5 ± 36.5 472.8 ± 38.7 446.8 ± 48.6 432 ± 41.4 0.32 477.9 ± 43.7 446.2 ± 52.1 429.4 ± 47 0.39
CCT 511.3 ± 30.8 491.5 ± 25.7 479.9 ± 35.6 500.6 ± 34.7 470.9 ± 43.8 463.8 ± 42.3 0.24 501.9 ± 39.4 476.6 ± 42.9 461.4 ± 36 0.60
  1. The means, standard deviations and p values of the respective measurement data at the respective times in the different groups are presented. Bold font indicates statistical significance
  2. BCVA Best corrected visual acuity, Astigm Astigmatism, Kmax Maximum corneal curvature, Kmin Minimum corneal curvature, minimum corneal thickness, MCT Minimum corneal thickness, CCT Central corneal thickness