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Ectasia development associated with percent tissue altered during LASIK
A significant association exists between the development of ectasia in eyes with normal preoperative topography and the percent tissue altered during LASIK, according to a study.The retrospective, case control study included 30 eyes of 16 patients who developed post-LASIK ectasia and 174 eyes of 88 patients with uncomplicated LASIK and at least 3 years of follow-up. Researchers evaluated the patients’ age, preoperative central corneal thickness, residual stromal bed, Ectasia Risk Score System scores and percent tissue altered.