title: Femtosecond laser-assisted astigmatic keratotomy for postoperative trabeculectomy-induced corneal astigmatism.
abstract: OBJECTIVE
  To describe a case of postoperative trabeculectomy-induced corneal astigmatism treated with femtosecond laser-assisted astigmatic keratotomy.
  
  
  METHODS
  After trabeculectomy, the patient demonstrated change in manifest refraction from -0.5 diopters preoperatively to mixed astigmatism of -3.5 + 5.25@100 postoperatively and a decrease in uncorrected distance visual acuity from 20/60 preoperatively to 20/200 at 1 month postoperatively. Because the patient was intolerant to spectacle use, she underwent femtosecond laser-assisted astigmatic keratotomy.
  
  
  RESULTS
  After astigmatic keratotomy there was improvement in corneal topographic astigmatism from 4.15 to 0.81 diopters with uncorrected distance visual acuity of 20/60(-2) and manifest refraction of -0.75 + 1.0@90 at 3 months postoperatively. There were no intraoperative or postoperative complications.
  
  
  CONCLUSIONS
  Femtosecond laser-assisted astigmatic keratotomy may be considered in eyes with postoperative trabeculectomy-induced mixed astigmatism.
authors.forename: Vardhaman P
authors.initials: VP
authors.lastname: Kankariya
authors.forename: Vasilios F
authors.initials: VF
authors.lastname: Diakonis
authors.forename: Jeffrey L
authors.initials: JL
authors.lastname: Goldberg
authors.forename: George D
authors.initials: GD
authors.lastname: Kymionis
authors.forename: Sonia H
authors.initials: SH
authors.lastname: Yoo
mesh_terms: D000368:Aged; D001251:Astigmatism / Q000175:diagnosis / Q000209:etiology / Q000601:surgery*; D048988:Corneal Surgery, Laser / Q000379:methods*; D019781:Corneal Topography; D005260:Female; D020327:Glaucoma Drainage Implants; D005902:Glaucoma, Open-Angle / Q000601:surgery*; D006801:Humans; D007429:Intraocular Pressure; D011183:Postoperative Complications; D012029:Refraction, Ocular; D014130:Trabeculectomy / Q000009:adverse effects*; D016896:Treatment Outcome; D014792:Visual Acuity