title: Intracorneal ring implantation using Intralase® with partial coverage of the cone in a patient after an alkaline injury.
abstract: OBJECTIVE
  To report the use of intracorneal ring segment (ICRS) implantation in a case of severe corneal thinning and irregularity secondary to alkali burn.
  
  
  METHODS
  A 33-year-old man who had a history of ocular alkali burn in the right eye was admitted. His best corrected visual acuity was 0.16 with manifest refraction of +5.00 (-7.00 × 180°). Orbscan II(®) revealed steepening of >53 D superiorly, excessive thinning inferiorly with thinnest pachymetric reading of 269 μm. Two KeraRing(®) segments, 200 μm thick and 90° arced, were implanted. During intrastromal channel creation by Intralase(®), the inferior half of the applanating cone was covered by a gelatinous paper to prevent the penetration of the laser beam into the anterior chamber. In the first year postoperation, best corrected visual acuity was 0.7 with manifest refraction of +1.50 (-3.50 × 35°). Visante(®) opticial coherence tomography displayed ICRS at a depth of <370 μm.
  
  
  CONCLUSIONS
  ICRS implantation with this novel approach may be an option in eyes with severe corneal irregularity and thinning.
authors.affiliation: Turkiye Hospital Eye Clinic, Istanbul.
authors.forename: Hanefi
authors.initials: H
authors.lastname: Cakir
authors.forename: Canan Asli
authors.initials: CA
authors.lastname: Utine
authors.forename: Mehmet
authors.initials: M
authors.lastname: Baykara