Posterior elevation as a risk factor for corneal ectasia after small-incision lenticule extraction

In a case report by Pazo et  al.,1 a patient developed unilateral corneal ectasia 15 months after small-incision lenticule extraction (SMILE). The authors stated that the preoperative topography of the affected eye was normal, with a maximum keratometry value of 44.9 diopters (D) and a minimum thickness of 582 μm. They rep orted no significant inferior–superior (I–S) asymmetry on the curvature maps and unremarkable anterior and posterior elevation maps. However, it seems as though the case was suspicious for subclinical keratoconus preoperatively.
Source: Journal of Cataract and Refractive Surgery - Category: Opthalmology Authors: Tags: Letter Source Type: research