Simultaneous versus Sequential Accelerated Corneal Collagen Cross-Linking and Wave Front Guided PRK for Treatment of Keratoconus: Objective and Subjective Evaluation
Table 7
Patient self-assessed mean subjective ratings preoperatively and 12 months postoperatively in both groups (mean ± SD).
Parameter
Group
Preop.
12 months postop.
value
Clarity of vision
G1
2.89 ± 0.43
4.41 ± 0.46
<0.001
G2
2.77 ± 0.49
4.46 ± 0.51
<0.001
0.23
0.44
—
Patient satisfaction
G1
2.22 ± 0.41
4.71 ± 0.41
<0.001
G2
2.41 ± 0.39
4.81 ± 0.22
<0.001
0.38
0.67
—
Glare
G1
3.66 ± 0.43
2.01 ± 0.99
<0.001
G2
3.82 ± 0.41
2.21 ± 1.1
<0.001
0.74
0.11
—
Halo
G1
3.88 ± 0.47
2.23 ± 0.37
<0.001
G2
3.91 ± 0.39
2.4 ± 0.25
<0.001
0.81
0.61
—
Far spectacle dependence
G1
4.8 ± 0.02
0.76 ± 0.61
<0.001
G2
5.00 ± 0.00
0.81 ± 0.66
<0.001
0.31
0.46
—
: paired -test for comparison between preoperative and postoperative values of the same group. : unpaired -test for comparison between the 2 groups. Significant values are bolded.
