title: Management of superior pellucid marginal degeneration with a single intracorneal ring segment using femtosecond laser.
abstract: OBJECTIVE
  A 26-year-old man with superior pellucid marginal corneal degeneration associated with poor visual acuity due to irregular astigmatism was treated with single-segment intracorneal ring insertion.
  
  
  METHODS
  Preoperatively the patient's uncorrected visual acuity (UCVA) was 0.05, best spectacle-corrected visual acuity (BSCVA) was 0.15, and manifest refraction was -4.50 x 85 in the left eye. The flattest meridian (K1) measured was 38.50 x 90 and the steepest meridian (K2) was 51.10 x 30.
  
  
  RESULTS
  Three months postoperatively, UCVA was 0.15, BSCVA was 0.4, and manifest refraction was -2.50 x 90.
  
  
  CONCLUSIONS
  The use of single Intacs with femtosecond laser to treat superior pellucid marginal corneal degeneration improved visual acuity.
authors.affiliation: Kudret Eye Hospital, Ankara, Turkey. ertanaylin@hotmail.com
authors.forename: Aylin
authors.initials: A
authors.lastname: Ertan
authors.forename: Mehmet
authors.initials: M
authors.lastname: Bahadir
mesh_terms: D000328:Adult; D001251:Astigmatism / Q000209:etiology / Q000601:surgery*; D003315:Cornea / Q000473:pathology / Q000601:surgery*; D003316:Corneal Diseases / Q000150:complications / Q000473:pathology / Q000601:surgery*; D019781:Corneal Topography; D004867:Equipment Design; D006801:Humans; D053685:Laser Therapy / Q000295:instrumentation*; D008297:Male; D019736:Prostheses and Implants; D019919:Prosthesis Implantation / Q000379:methods*; D014792:Visual Acuity