title: Treatment of keratoectasia after LASIK by intrastromal corneal ring segments in two patients who had no preoperative risk factors.
abstract: OBJECTIVE
  To report on keratoectasia after laser in situ keratomileusis (LASIK) in two eyes of two patients who had no obvious preoperative risk factors, and treatment of keratoectasia by intrastromal corneal ring segments.
  
  
  METHODS
  Clinical interventional case report.
  
  
  RESULTS
  Two patients underwent LASIK in both eyes at Shinagawa LASIK center, Tokyo. Preoperative standard ophthalmological examinations demonstrated no specific risk factors of keratoectasia. However, each eye of the two patients developed keratoectasia as defined by corneal topography. Treatment for keratoectasia was performed by inserting intrastromal corneal ring segments (ICRS) in the affected eyes. In one eye, KeraRing (MEDIPHACOS, Ltd, Brazil) was inserted, and Intacs SK (Addition Technology Inc, USA) was inserted in the other.
  
  
  CONCLUSIONS
  Even in eyes where no risk factors for keratoectasia were found following thorough preoperative examinations, keratoectasia could develop after LASIK. ICRS could be effective for the treatment of keratoectasia after LASIK.
authors.affiliation: Shinagawa LASIK Center, Tokyo, Japan.
authors.forename: Minoru
authors.initials: M
authors.lastname: Tomita
authors.forename: Naoko
authors.initials: N
authors.lastname: Inoue
authors.forename: Tadahiko
authors.initials: T
authors.lastname: Tsuru