title: Unusual intermediate-term outcome in three cases of limbal autograft transplantation.
abstract: OBJECTIVE
  To report an unusual intermediate-term outcome after limbal autograft transplantation for unilateral, severe chemical burns.
  
  
  METHODS
  Case reports of three consecutive cases.
  
  
  METHODS
  Three patients with a history of chemical burns. The fellow eye was clinically uninvolved in all patients. Surgery was indicated for conjunctivalization (cases 1 and 3) and persistent epithelial defect (case 2).
  
  
  METHODS
  Three (cases 2 and 3) or four (case 1) 1.25-clock-hour-wide limbal grafts were harvested from the fellow eye and transplanted to the limbus in the affected eye. Surface re-epithelialization, improvement in visual acuity, and maintenance of surface stability were monitored.
  
  
  RESULTS
  Limbal grafts were effective in re-epithelialization of the corneal surface within 4 weeks in all cases. Symptomatic relief and improvement in visual acuity were noted during early follow-up. However, a progressive conjunctival ingrowth that tended to override the grafts and encroach the visual axis was noted over the course of a year in all three recipient eyes.
  
  
  CONCLUSIONS
  Limbal autograft transplantation is an effective method for surface re-epithelialization in strictly unilateral chemical burns. Caution should be exercised in case selection. The authors' experience suggests a variable degree of attenuation in viability of transplanted limbus. Close follow-up of operated eyes is necessary to determine the long-term efficacy of limbal transplants as a source of corneal phenotypic cells.
mesh_terms: D000328:Adult; D002057:Burns, Chemical / Q000473:pathology / Q000601:surgery*; D017690:Cell Transplantation; D004847:Epithelial Cells / Q000637:transplantation; D005126:Eye Burns / Q000139:chemically induced* / Q000473:pathology; D005500:Follow-Up Studies; D006801:Humans; D016850:Limbus Corneae / Q000166:cytology* / Q000601:surgery*; D008297:Male; D033581:Stem Cell Transplantation; D014182:Transplantation, Autologous; D016896:Treatment Outcome; D014792:Visual Acuity