Corneal Collagen Cross-Linking with and without Epithelial Removal: A Contralateral Study with 0.5% Hypotonic Riboflavin Solution

Table 2

Pain evaluation.

	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
𝑃 value	0.3765	0.002	0.000	—