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It is well known that preoperative abnormal topographic abnormality, low residual stromal bed thickness, thin corneas, young age, and high myopia are factors that might increase the risk for developing corneal ectasia after corneal refractive surgery.1 As outlined, this patient had thicker than average corneal thickness. The anterior elevation map showed an asymmetric bowtie pattern with an I –S index of 1.0 D, which is below the recognized 1.4 D cutoff, and there was no skewed radial axis. Furthermore, the patient was 23 years old and the treatment size was small; therefore, this patient was deemed a suitable candidate for SMILE.
Source: Journal of Cataract and Refractive Surgery - Category: Opthalmology Authors: Tags: Letter Source Type: research