title: Treatment of visual problems after intracorneal ring implantation.
abstract: OBJECTIVE
  To report the effect of wavefront-guided photorefractive keratectomy and corneal collagen cross-linking (CXL) on visual problems after Ferrara ring segment placement.
  
  
  METHODS
  A 32-year-old male patient was treated with a Ferrara ring segment for keratoconus. One year later, the ring was removed due to severe glare complaints. After 6 months, wavefront-guided photorefractive keratectomy and CXL were applied simultaneously to correct high order aberration and refractive error.
  
  
  RESULTS
  Six months after the wavefront-guided photorefractive keratectomy and CXL, the uncorrected distance visual acuity was 20/25, and there was a 30% decrease in coma aberrations. The glare complaint regressed.
  
  
  CONCLUSIONS
  Wavefront-guided surface ablation and CXL may reduce high order aberrations and glare complaints after intrastromal corneal ring implantation.
authors.affiliation: Fatih University, Department of Ophthalmology, Sema Research and Treatment Hospital, Istanbul, Turkey.
authors.forename: Aydin
authors.initials: A
authors.lastname: Yildirim
authors.forename: Hasim
authors.initials: H
authors.lastname: Uslu
authors.forename: Necip
authors.initials: N
authors.lastname: Kara
authors.forename: Engin Bilge
authors.initials: EB
authors.lastname: Ozgurhan
keywords: Ferrara ring; corneal collagen cross-linking; corneal wavefront; keratoconus; photorefractive keratectomy