Clinical Study
Corneal Collagen Cross-Linking with and without Epithelial Removal: A Contralateral Study with 0.5% Hypotonic Riboflavin Solution
| | Pain score | Time point of the most intense pain (hour) | Pain length (hour) | Preference |
| “Epithelium-on” CXL | 3.03 ± 0.73 | 3.78 ± 1.67 | 11.63 ± 5.89 | 13 | “Epithelium-off” CXL | 3.33 ± 0.38 | 6.25 ± 3.38 | 33.90 ± 23.76 | 5 | value | 0.3765 | 0.002 | 0.000 | — |
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