Corneal topographic changes induced by excision of perilimbal lesions

Ophthalmic Surg Lasers. 1999 Jun;30(6):458-64.


Background and objectives: To evaluate corneal topographic changes induced by excision of two pterygia and a perilimbal dermoid.

Material and methods: Using the EyeSys Corneal Analysis System, we retrospectively analyzed the changes in astigmatism, mean central corneal power, and other topographic parameters of three corneas before and after surgical removal of two pterygia and a perilimbal dermoid.

Results: Marked corneal steepening occurred along the preoperative flat meridian after the excision of the pterygia and dermoid cyst. For each patient, surgery increased the mean central corneal curvature and decreased total astigmatism.

Conclusion: Surgical excision can ameliorate abnormal corneal topographic changes produced by limbal lesions.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Aged
  • Astigmatism / etiology
  • Astigmatism / physiopathology*
  • Cornea / physiopathology*
  • Cornea / surgery
  • Corneal Diseases / complications
  • Corneal Diseases / surgery*
  • Corneal Topography*
  • Dermoid Cyst / complications
  • Dermoid Cyst / surgery*
  • Eye Neoplasms / complications
  • Eye Neoplasms / surgery*
  • Humans
  • Pterygium / complications
  • Pterygium / surgery*
  • Refraction, Ocular
  • Retrospective Studies
  • Visual Acuity