title: PRK for epithelial ingrowth in buttonhole after LASIK.
abstract: OBJECTIVE
  To evaluate the efficacy of photorefractive keratectomy (PRK) in progressive central epithelial ingrowth after buttonholes after laser in situ keratomileusis (LASIK).
  
  
  METHODS
  Two eyes of two patients with progressive central epithelial ingrowth and fibrosis in flap buttonholes after LASIK underwent PRK 6 months following primary surgery.
  
  
  RESULTS
  Epithelial ingrowth was treated successfully in both eyes. The uncorrected visual acuities were 20/20, and there was no evidence of recurrent epithelial ingrowth after 6 months.
  
  
  CONCLUSIONS
  Photorefractive keratectomy is a useful modality in the treatment of central epithelial ingrowth in buttonholes following LASIK. As a single-step surgery, it offers both therapeutic and optical advantages by simultaneously clearing the corneal opacity and correcting the refractive error in selected cases.
authors.affiliation: Rajendra Prasad Center for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, India. rasikvajpayee@rediffmail.com
authors.forename: Rasik B
authors.initials: RB
authors.lastname: Vajpayee
authors.forename: Vishal
authors.initials: V
authors.lastname: Gupta
authors.forename: Namrata
authors.initials: N
authors.lastname: Sharma
mesh_terms: D000328:Adult; D003316:Corneal Diseases / Q000209:etiology / Q000601:surgery*; D003319:Corneal Stroma / Q000293:injuries*; D004847:Epithelial Cells / Q000473:pathology*; D005260:Female; D006801:Humans; D007431:Intraoperative Complications; D020731:Keratomileusis, Laser In Situ / Q000009:adverse effects*; D054018:Lasers, Excimer; D009216:Myopia / Q000601:surgery; D018903:Photorefractive Keratectomy / Q000379:methods*; D012421:Rupture; D013524:Surgical Flaps; D014792:Visual Acuity