title: Pupil dilation with intracameral 1% lidocaine during glaucoma filtering surgery.
abstract: OBJECTIVE
  To evaluate pupil dilation from intracameral injection of nonpreserved 1% lidocaine.
  
  
  METHODS
  Observational case series of 25 consecutive phakic trabeculectomies.
  
  
  METHODS
  Patients were evaluated in the operating room setting and given one drop of topical tetracaine preoperatively. Nonpreserved 1% lidocaine (0.1 cc) was injected intracameraly into the anterior chamber through a paracentesis site at the corneal limbus. Pupil diameter was measured after instillation of topical tetracaine, before injection of intracameral lidocaine. Postinjection measurements were made at 1, 3, and 5 minutes.
  
  
  RESULTS
  The mean male pupil diameter was significantly greater than female dilation at every time point. The mean blue iris diameter was greater than brown at 1 and 3 minutes, but there was no difference at 5 minutes or more. There was no racial difference in the pupil dilation response to intracameral lidocaine.
  
  
  CONCLUSIONS
  Nonpreserved intracameral 1% lidocaine produces immediate pupil dilation in previously undilated phakic patients during trabeculectomy surgery.
authors.affiliation: Wills Eye Hospital Glaucoma Service, Philadelphia, Pennsylvania, USA. johnlee@pol.net
authors.forename: John J
authors.initials: JJ
authors.lastname: Lee
authors.forename: Marlene R
authors.initials: MR
authors.lastname: Moster
authors.forename: Jeffrey D
authors.initials: JD
authors.lastname: Henderer
authors.forename: Jaime H
authors.initials: JH
authors.lastname: Membreno
mesh_terms: D000772:Anesthesia, Local; D000779:Anesthetics, Local / Q000008:administration & dosage*; D000867:Anterior Chamber / Q000187:drug effects; D005127:Eye Color; D005260:Female; D005901:Glaucoma / Q000601:surgery*; D006801:Humans; D007267:Injections; D008012:Lidocaine / Q000008:administration & dosage*; D008297:Male; D011680:Pupil / Q000187:drug effects*; D012189:Retrospective Studies; D012737:Sex Factors; D014130:Trabeculectomy
chemical_list: D000779:Anesthetics, Local; D008012:Lidocaine