Purpose: To examine the biomechanical effect and the UVA-absorption of a riboflavin/UVA cross-linking method, which suggests leaving the epithelium intact and applying benzalkonium chloride (BAC) on rabbits' corneas.
Methods: In total, 32 eyes from 16 rabbits were divided into 4 groups. Group 1 was treated with intact epithelium and without BAC.