Corneal collagen crosslinking in progressive keratoconus: Changes in corneal irregularity indices and correlation with the best spectacle-corrected visual acuity


METHODS: This is a retrospective uncontrolled study in eyes with progressive KC. In all 62 eyes from 48 patients, BSCVA, mean K, corneal irregularity at 3 mm and 5 mm were measured before CXL, at six months, and then annually until the last visit. For data analysis, patients were divided into three groups according to their mean preoperative K: group 1 included 12 patients with mean K value less than 43.9 D, group 2 included 41 patients with mean K value between 44-47.9 D, and group 3 included 10 patients with mean K value greater than 48 D.


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