title: Detection of an abnormally thick LASIK flap with anterior segment OCT imaging prior to planned LASIK retreatment surgery.
abstract: To report a case of an abnormally thick flap that was detected with the use of anterior segment optical coherence tomography (OCT) prior to planned LASIK retreatment surgery.
  
  
  
  A 43-year-old man presented 6 years after bilateral LASIK surgery with uncorrected visual acuity (UCVA) of 20/20 in the right eye and 20/100 in the left eye, and best spectacle-corrected visual acuity (BSCVA) of 20/20 in the right eye and 20/20 in the left eye (refraction -2.25 -1.25 x 131). Anterior segment OCT was performed before LASIK retreatment surgery in the left eye.
  
  
  
  The flap was found to be 394 microm and the residual stromal bed was too thin (152 microm) to allow for safe LASIK retreatment surgery. After waiting 4 months to ensure refractive stability, photorefractive keratectomy was performed. Postoperative UCVA was 20/20 plano.
  
  
  
  The use of anterior segment OCT in the preoperative examination for planned LASIK retreatment surgery provided more reliable data.
authors.affiliation: Research Department, Instituto de Ojos Oftalmo Salud, Lima, Peru. mariale_1610@hotmail.com
authors.forename: Luis
authors.initials: L
authors.lastname: Izquierdo
authors.forename: Maria A
authors.initials: MA
authors.lastname: Henriquez
authors.forename: Peter A
authors.initials: PA
authors.lastname: Zakrzewski
mesh_terms: D000328:Adult; D000869:Anterior Eye Segment / Q000473:pathology*; D001699:Biometry; D006801:Humans; D020731:Keratomileusis, Laser In Situ; D008297:Male; D012086:Reoperation; D013524:Surgical Flaps / Q000473:pathology*; D041623:Tomography, Optical Coherence / Q000379:methods*; D014792:Visual Acuity