Epithelium-on corneal crosslinking for management of advanced keratoconus
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AbstractPurpose

To report the 1-year visual and keratometric results of epithelium-on corneal collagen crosslinking (CXL) for advanced keratoconus (median maximum keratometry [K] ≥58.0 diopters [D]).

Setting

School of Ophthalmology and Optometry and Eye Hospital of Wenzhou Medical College, Wenzhou, China.

Design

Prospective case series.

Methods

Patients with bilateral progressive keratoconus had tetracaine-enhanced epithelium-on CXL. The worse eye had CXL, and the fellow eye was not treated. Results were reported 1, 3, 6, and 12 months postoperatively. The outcomes were compared with those in the fellow untreated eyes.

Results

Twenty-one eyes of 21 patients with a median age of 20.4 years (interquartile range [IQR], 9.5 years) were treated. A significant improvement in postoperative uncorrected distance visual acuity was observed at 12 months (P = .002). Postoperative corrected distance visual acuity improved at 6 months and 12 months (P ≤ .009) compared with baseline values. The maximum K decreased by 1.63 D from the median preoperative maximum K of 62.7 D (IQR, 12.9 D) at 12 months (P < .001). The reduction in maximum K was higher after CXL than in untreated eyes at the end of 12 months (P = .001). Correlation analysis between the preoperative maximum K values and the change over 6 to 12 months between different studies showed a significant correlation (r = −0.764, P < .001; Spearman correlation).

Conclusions

Epithelium-on CXL was an effective treatment for patients with advanced keratoconus. A higher preoperative maximum K value correlated with greater corneal flattening after CXL.
All Author(s) ListChen S, Chan TC, Zhang J, Ding P, Chan JC, Yu M, Li Y, Jhanji V, Wang Q
Journal nameJournal of Cataract and Refractive Surgery
Year2016
Month5
Volume Number42
Issue Number5
PublisherElsevier
Pages738 - 749
ISSN0886-3350
eISSN1873-4502
LanguagesEnglish-United Kingdom

Last updated on 2021-19-02 at 00:20