Effect of the retention ring-assisted continuous application of riboflavin in pulsed-light accelerated corneal collagen cross-linking on the progression of keratoconus

Table 1 Baseline characteristics of the patients who underwent pulsed accelerated cross-linking in this study

Demographic factors
Eyes	20 eyes of 18 patients
Sex	14 male (77.7%), 4 female (22.3%)
Age (year)	28.0 ± 7.3
Systemic disease / Atopy	0 (0%) / 2 (11%)
FU (month)	61.3 ± 53.6
POD (month)	12.8 ± 1.0
BCVA (logMAR)	0.43 ± 0.43
UCVA (logMAR)	0.81 ± 0.38
Refractive error
Spherical (diopter)	−7.40 ± 2.80
Cylinder (diopter)	−4.81 ± 1.36
SE (diopter)	−9.81 ± 2.93
Topography
Kmax (diopter)	52.20 ± 4.32
Kmin (diopter)	46.50 ± 2.18
Kavg (diopter)	49.35 ± 3.06
Astigmatism	5.71 ± 3.07
IR, 3 mm	6.38 ± 2.17
IR, 5 mm	6.23 ± 1.86
AS-OCT
CCT (μm)	492.1 ± 39.1
TCT (μm)	466.6 ± 37.1
ECD (cells/ mm²)	2731 ± 279.5
Depth of demarcation line after 1mo of cross-linking (μm)	281.0 ± 39.9

Values are presented as mean ± SD, FU, follow up; POD, postoperative date; BCVA, best-corrected visual acuity; UCVA, uncorrected visual acuity; logMAR, logarithm of minimum angle of resolution; SE, spherical equivalent; IR, irregular astigmatism; CCT, central corneal thickness; TCT, thinnest corneal thickness; AS-OCT, anterior segment optical coherence tomography; ECD, endothelial cell density

ISSN: 1471-2415