Refractive, Topographic, and Aberrometric Results at 2-Year Follow-Up for Accelerated Corneal Cross-Link for Progressive Keratoconus

Table 1

Visual, refractive, and corneal topography data before and 1, 6, 12, and 24 months after accelerated corneal cross-linking.

Characteristics (mean ± SD)	Preoperative	1 M	6 M	12 M		24 M
UDVA (LogMAR)	0.56 ± 0.38	0.57 ± 0.33	0.50 ± 0.29	0.47 ± 0.27		0.46 ± 0.29
CDVA (LogMAR)	0.42 ± 0.26	0.42 ± 0.25	0.36 ± 0.25	0.34 ± 0.21		0.33 ± 0.22
Spherical values (D)	−3.79 ± 2.45	−3.78 ± 2.51	−3.72 ± 2.42	−3.53 ± 2.58	0.143	−3.50 ± 2.54	0.096
Cylindric values (D)	3.75 ± 1.76	3.81 ± 1.77	3.70 ± 1.74	3.72 ± 1.63	0.806	3.66 ± 1.58	0.458
(D)	46.14 ± 2.71	46.28 ± 2.88	46.16 ± 2.80	45.94 ± 2.87		45.99 ± 2.74
(D)	49.97 ± 3.60	50.31 ± 3.75	49.87 ± 3.56	49.63 ± 3.56		49.62 ± 3.47
(D)	47.88 ± 3.00	48.10 ± 3.17	47.93 ± 3.04	47.70 ± 3.07		47.72 ± 2.94
(D)	56.40 ± 4.55	56.63 ± 4.45	56.34 ± 4.63	55.68 ± 4.67		55.53 ± 4.54
Central corneal thickness (μm)	443.036 ± 41.24	428.10 ± 44.78	439.17 ± 44.10	445.21 ± 43.68	0.104	446.68 ± 30.03	0.071

SD: standard deviation, M: month, UDVA: uncorrected distance visual acuity, CDVA: corrected distance visual acuity, K: keratometry, D: diopter, , comparison of preoperative and 12th month values, , comparison of preoperative and 24th month values, and statistically significant increased values .