title: The surgical management of an advanced pterygium involving the entire cornea.
abstract: OBJECTIVE
  Conjunctival autografting is a well-established surgical procedure to prevent recurrence after pterygium excision. We described a modified technique of harvesting an annular autograft to cover a large conjunctival defect after excision of an extensive primary pterygium that involved three quadrants of the limbus.
  
  
  METHODS
  A 73-year-old Chinese farmer underwent an excision of an advanced right pterygium involving the entire cornea. A free donor graft was then harvested from the remaining superior bulbar conjunctiva to cover the conjunctival defect, which involved approximately-three quadrants of limbus. The undersized graft was split down the center to create an annular graft to cover the defect.
  
  
  RESULTS
  Postoperatively, there has been no recurrence over a total follow-up period of 11 months. Six months after the initial pterygium surgery, he underwent a successful penetrating keratoplasty for residual deep stromal scarring. Visual acuity 5 months after the penetrating keratoplasty remained stable at 6/18.
  
  
  CONCLUSIONS
  This case report shows that a modified technique of conjunctival autografting can be successful in preventing recurrence in an advanced pterygium after excision. Successful visual rehabilitation with a penetrating keratoplasty also was demonstrated in this patient.
authors.affiliation: Singapore National Eye Centre, Singapore.
authors.forename: C C
authors.initials: CC
authors.lastname: Yip
authors.forename: L
authors.initials: L
authors.lastname: Lim
authors.forename: D T
authors.initials: DT
authors.lastname: Tan
mesh_terms: D000368:Aged; D003228:Conjunctiva / Q000637:transplantation; D003316:Corneal Diseases / Q000150:complications / Q000473:pathology / Q000601:surgery*; D005500:Follow-Up Studies; D006801:Humans; D015948:Keratoplasty, Penetrating; D016850:Limbus Corneae / Q000473:pathology*; D008297:Male; D011625:Pterygium / Q000150:complications / Q000473:pathology / Q000601:surgery*; D012008:Recurrence; D014182:Transplantation, Autologous / Q000379:methods; D014792:Visual Acuity