title: Successful outcome of pars plana vitreous surgery in chronic hypotony due to uveitis.
abstract: OBJECTIVE
  To report outcome of pars plana vitrectomy in patients with chronic hypotony due to uveitis.
  
  
  METHODS
  Assessment of ciliary body was done preoperatively by ultrasound biomicroscopy and intraoperatively by direct visualization. Surgical procedure included pars plana or limbal lensectomy and vitrectomy with removal of ciliary membranes and traction. Silicone oil tamponade was used in selected eyes. Postoperatively subtenon triamcinolone acetonide was given if intraocular pressure (IOP) remained low.
  
  
  RESULTS
  Fifteen eyes of nine patients, all woman at mean age of 15.66 +/- 12.57 (4-40) years, were included. In 7 eyes with intact ciliary processes, mean pre- and postoperative IOP was 4.00 +/- 1.6 mmHg and 9.1 +/- 4.1 mmHg, respectively. In 4 eyes with ciliary atrophy that did not receive silicone oil tamponade, mean pre- and postoperative IOP was 4.25 +/- 1.7 and 3.75 +/- 0.9 mmHg, respectively. In 4 eyes with ciliary atrophy that received silicone oil tamponade mean pre- and postoperative IOP was 3.75 +/- 1.7 and 11.5 +/- 2.3 mmHg, respectively. Mean follow-up was 19.9 +/- 14.9 (8-56) months. Postoperative mean logMAR visual acuity improved significantly (P < 0.001) from 2.29 +/- 0.67 to 1.01 +/- 0.89.
  
  
  CONCLUSIONS
  In eyes with normal ciliary processes, removal of ciliary membranes alone was sufficient to restore IOP. However, if ciliary atrophy was present, IOP was restored only in those eyes that received silicone oil tamponade.
authors.affiliation: Department of Ophthalmology, Advanced Eye Centre, Post Graduate Institute of Medical Education and Research, Chandigarh, India 160012.
authors.forename: Pawan
authors.initials: P
authors.lastname: Gupta
authors.forename: Amod
authors.initials: A
authors.lastname: Gupta
authors.forename: Vishali
authors.initials: V
authors.lastname: Gupta
authors.forename: Ramandeep
authors.initials: R
authors.lastname: Singh
mesh_terms: D000293:Adolescent; D000328:Adult; D001284:Atrophy; D002648:Child; D002675:Child, Preschool; D002908:Chronic Disease; D002924:Ciliary Body / Q000000981:diagnostic imaging / Q000473:pathology*; D005260:Female; D006801:Humans; D007429:Intraocular Pressure; D033401:Microscopy, Acoustic; D015814:Ocular Hypotension / Q000209:etiology / Q000601:surgery*; D012189:Retrospective Studies; D012827:Silicone Oils / Q000008:administration & dosage; D016896:Treatment Outcome; D014605:Uveitis / Q000150:complications*; D014792:Visual Acuity / Q000502:physiology; D014821:Vitrectomy; D055815:Young Adult
chemical_list: D012827:Silicone Oils