title: [Corneal astigmatism following trabeculectomy].
abstract: OBJECTIVE
  The study was designed to investigate the change of corneal astigmatism following trabeculectomy.
  
  
  METHODS
  Before and after the operation at different periods, the corneal astigmatism of 42 eyes was evaluated by Topcon-OM-3 keratometer.
  
  
  RESULTS
  Almost the corneal astigmatism of all the cases was with-the-rule in the early stage after trabeculectomy. Among them, the astigmatism in 41.03% of cases was more than 2.00D, 3 months post-operatively 17.50% shifted towards against-the-rule, and 9.50% remained more than 2.00D which was induced by the surgery.
  
  
  CONCLUSIONS
  Trabeculectomy may cause certain with-the-rule corneal astigmatism. The corneal astigmatism in most of the cases may decrease as time passes by.
authors.affiliation: Zhongshan Ophthalmic Center, Sun Yat-sen University of Medical Sciences, Guangzhou.
authors.forename: H
authors.initials: H
authors.lastname: Liu
authors.forename: D
authors.initials: D
authors.lastname: Peng
authors.forename: J
authors.initials: J
authors.lastname: Chen
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001251:Astigmatism / Q000209:etiology*; D005260:Female; D005500:Follow-Up Studies; D015812:Glaucoma, Angle-Closure / Q000601:surgery; D005902:Glaucoma, Open-Angle / Q000601:surgery; D006801:Humans; D008297:Male; D008875:Middle Aged; D014130:Trabeculectomy / Q000009:adverse effects*