Simultaneous versus Sequential Accelerated Corneal Collagen Cross-Linking and Wave Front Guided PRK for Treatment of Keratoconus: Objective and Subjective Evaluation

Table 2

Pre- and postoperative measured parameters (mean ± SD) of the studied patients in sequential group 6 months after CXL alone.

Parameter	Preop.	Postoperative	value
UDVA	0.95 ± 0.31	0.92 ± 0.37	0.42
CDVA	0.29 ± 0.22	0.28 ± 0.19	0.52
Sphere (D)	−1.8 ± 1.56	−1.73 ± 1.92	0.35
Cylinder (D)	−2.7 ± 1.4	−2.6 ± 1.5	0.24
MRSE (D)	−3.7 ± 2.4	−3.6 ± 2.4	0.33
(D)	42.9 ± 1.91	42.1 ± 1.93	0.11
(D)	45.4 ± 1.83	44.9 ± 1.83	0.09
max (D)	48.3 ± 5.4	46.1 ± 5.6	0.05
MCT	475 ± 49	473 ± 53	0.74

Significant values are bolded.
UDVA: uncorrected distant visual acuity.
CDVA: corrected distant visual acuity.
max: maximum keratometry.
MCT: minimum corneal thickness.
D: diopter.