Rate of ectasia and incidence of irregular topography in patients with unidentified preoperative risk factors undergoing femtosecond laser-assisted LASIK
A 34-year-old female underwent bilateral LASIK in December 2008. At 12 months postop, the patient complained of progressive blurring in both eyes. The UCVA was 20/50 OD and 20/80 OS, and the BCVA was 20/20 OD and 20/25 OS. The Orbscan revealed inferior steepening bilaterally (). The UCVA at the most recent follow up, at 32 months postop, was 20/60 in both eyes (OU). Keratometry at this visit measured 40.60/42.00 OD and 41.20/42.80 OS (), with Orbscan pachymetry of 479 μm OD and 462 μm OS. The patient currently has a spectacle-corrected BCVA of 20/25 OD and 20/15 OS.\nAs in cases 1 and 2, a retrospective review of the preoperative corneal topography demonstrated inferior steepening bilaterally ( and ). There was no noted family history of keratoconus.