title: Implantation of a black diaphragm intraocular lens for traumatic aniridia.
abstract: OBJECTIVE
  To evaluate the suitability and safety of a black diaphragm posterior chamber intraocular lens (IOL).
  
  
  METHODS
  Department of Ophthalmology, Leeds General Infirmary, Leeds, United Kingdom.
  
  
  METHODS
  Seven patients who had secondary implantation of a Morcher 67G black diaphragm posterior chamber IOL were identified. All patients were men with a mean age of 42 years who had previous ocular trauma resulting in extensive loss of iris tissue (traumatic aniridia). Simultaneous penetrating keratoplasty was performed in 4 cases. Minimum follow-up was 10 months (mean 19 months).
  
  
  RESULTS
  Best corrected visual acuity improved in 5 cases and was unchanged in 1 case. The lens was well centered in 5 cases. Two cases developed secondary glaucoma, 1 requiring trabeculectomy. One case developed infective endophthalmitis but had a visual acuity of 6/18 at last follow-up, and 1 had a vitreous and anterior chamber hemorrhage, which resolved.
  
  
  CONCLUSIONS
  The black diaphragm posterior chamber IOL overcame aphakia in eyes with considerable loss of iris tissue and may mitigate the visually disabling effects of traumatic aniridia. Although this lens appears safe, caution should be used in its implantation until more patients with longer follow-up are studied.
authors.affiliation: Corneal Service, General Infirmary at Leeds, United Kingdom.
authors.forename: C G
authors.initials: CG
authors.lastname: Thompson
authors.forename: K
authors.initials: K
authors.lastname: Fawzy
authors.forename: I G
authors.initials: IG
authors.lastname: Bryce
authors.forename: B A
authors.initials: BA
authors.lastname: Noble
mesh_terms: D000328:Adult; D015783:Aniridia / Q000209:etiology / Q000601:surgery*; D015807:Eye Injuries, Penetrating / Q000150:complications / Q000601:surgery*; D005500:Follow-Up Studies; D006801:Humans; D007498:Iris / Q000293:injuries*; D015948:Keratoplasty, Penetrating; D019654:Lens Implantation, Intraocular; D007910:Lenses, Intraocular; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications; D011474:Prosthesis Design; D012449:Safety; D014792:Visual Acuity