Simultaneous versus Sequential Accelerated Corneal Collagen Cross-Linking and Wave Front Guided PRK for Treatment of Keratoconus: Objective and Subjective Evaluation
Table 1
Demographic information of the population enrolled in the study.
Parameter
Values
G 1
G 2
Number of patients (eyes)
30 (30)
32 (32)
—
Sex (male : female)
14 : 16
15 : 17
—
Mean age ± SD, years
26.3 ± 4.2
24.8 ± 5.5
0.33
Age range, years
21 to 31
22 to 33
—
Gender (male/female)
6/8
7/6
—
Mean refractive cylinder ± SD, D
−2.9 ± 1.6
−2.7 ± 1.4
0.23
Range of refractive cylinder, D
−1.25 to −4.25
−1.4 to −4.3
—
Mean refractive sphere ± SD,
−2.2 ± 1.82
−1.8 ± 1.56
0.12
Range of refractive sphere, D
−0.50 to −3.75
−0.25 to −3.9
—
MRSE (D)
−3.7 ± 2.4
−3.8 ± 2.6
0.52
max D
49.1 ± 4.1
48.3 ± 5.4
0.34
Thinnest pachymetry, um
466 ± 42
475 ± 49
0.81
: unpaired -test for comparison between the 2 groups. D: diopter. MRSE: mean refractive spherical equivalent. max: maximum keratometry.