title: 25-Gauge peripheral iridectomy during vitrectomy.
abstract: OBJECTIVE
  To report peripheral iridectomy using a 25-gauge vitreous cutter in a 42-year-old man with pupillary block due to adhesion of the internal iris surface to the continuous circular capsulorhexis.
  
  
  METHODS
  A corneal opening was made at 10 o'clock during vitrectomy. A 25-gauge vitreous cutter was inserted into the anterior chamber with the port facing downward, and peripheral iridectomy at the 12 o'clock position was performed. The vitreous cutter was set at a cutting speed of 2500 cpm and the aspiration pressure at 600 mmHg.
  
  
  RESULTS
  A 25-gauge vitreous cutter with a fine shaft could easily be inserted into the peripheral anterior chamber, and there was no contact with the corneal endothelium even when the anterior chamber became shallow in association with iridectomy. In this patient, pupillary block resolved with peripheral iridectomy, and ocular pressure was also controlled.
  
  
  CONCLUSIONS
  25-gauge peripheral iridectomy is a simple technique that permits iridectomy of appropriate size at any desirable location.
authors.affiliation: Department of Ophthalmology, School of Medicine, Nihon University, Tokyo, Japan. sshimada@olive.ocn.ne.jp
authors.forename: H
authors.initials: H
authors.lastname: Shimada
authors.forename: H
authors.initials: H
authors.lastname: Nakashizuka
authors.forename: T
authors.initials: T
authors.lastname: Hattori
authors.forename: R
authors.initials: R
authors.lastname: Mori
authors.forename: Y
authors.initials: Y
authors.lastname: Mizutani
authors.forename: M
authors.initials: M
authors.lastname: Yuzawa
mesh_terms: D000328:Adult; D019923:Capsulorhexis / Q000009:adverse effects; D002386:Cataract / Q000150:complications; D003930:Diabetic Retinopathy / Q000150:complications / Q000601:surgery; D006801:Humans; D032801:Iridectomy / Q000379:methods*; D007499:Iris Diseases / Q000209:etiology / Q000601:surgery*; D008297:Male; D019060:Minimally Invasive Surgical Procedures; D011183:Postoperative Complications; D014792:Visual Acuity; D014821:Vitrectomy / Q000379:methods*; D014823:Vitreous Hemorrhage / Q000150:complications / Q000601:surgery