Regression of Keratoconus After Gastric Sleeve Surgery.

To report a case of regression of keratoconus by corneal topography after gastric sleeve surgery.Case report.A patient with a history of bilateral progressive keratoconus was observed before and after bariatric surgery for morbid obesity. His left eye had a history of penetrating keratoplasty for advanced keratoconus, and his right eye had active progression of keratoconus in the years before sleeve gastrectomy. After the surgery, the right eye showed significant corneal flattening over a period of 2 years. This was especially pronounced at the apex of the cone (∼5 D). The patient's best spectacle-corrected visual acuity also improved along with management of his obesity and type 2 diabetes mellitus.This is the first report of regression of keratoconus after bariatric surgery.