title: Laser trabecular sclerosis for chronic hypotony after vitreoretinal surgery.
abstract: OBJECTIVE
  To perform a pilot study of laser trabecular sclerosis (LTS) for chronic ocular hypotony after vitreoretinal surgery.
  
  
  METHODS
  Prospective noncomparative case series.
  
  
  METHODS
  Three patients with chronic hypotony after vitreoretinal procedures underwent LTS. All patients had undergone complex vitreoretinal surgery with attached retinas postoperatively but with persistent hypotony and poor vision.
  
  
  METHODS
  Laser trabecular sclerosis was performed in a fashion similar to laser trabeculoplasty, using a 100-microm spot, 800 to 1000 mW power at 0.1 seconds, and applying heavy confluent treatment in >/=1 sessions throughout the angle where trabecular meshwork was visible.
  
  
  METHODS
  Intraocular pressure (IOP), best spectacle-corrected visual acuity, and complications were studied.
  
  
  RESULTS
  In 1 patient, a single session of LTS was followed by an increase in IOP of approximately 4 mm, with subjective and objective improvement in vision. A second patient exhibited improvement in IOP and visual acuity after 3 sessions of LTS. A third patient underwent 3 sessions of LTS without improvement in IOP or vision.
  
  
  CONCLUSIONS
  Given the limitations of this small series, including the lack of a randomized prospective design, it is not possible to determine the safety or efficacy of LTS, but this study does suggest that this procedure could play a therapeutic role in some patients with chronic symptomatic hypotony after complex intraocular surgery. Further study is warranted.
authors.affiliation: Midwest Eye Institute, Indianapolis, Indiana 46280, USA.
authors.forename: Thomas A
authors.initials: TA
authors.lastname: Ciulla
authors.forename: Louis B
authors.initials: LB
authors.lastname: Cantor
authors.forename: Daryl E
authors.initials: DE
authors.lastname: Kurz
authors.forename: Angelina
authors.initials: A
authors.lastname: Capistrano
mesh_terms: D000328:Adult; D000368:Aged; D002908:Chronic Disease; D005260:Female; D006801:Humans; D007429:Intraocular Pressure; D053685:Laser Therapy; D008297:Male; D008875:Middle Aged; D015814:Ocular Hypotension / Q000209:etiology / Q000601:surgery*; D010865:Pilot Projects; D011183:Postoperative Complications; D011446:Prospective Studies; D012086:Reoperation; D012163:Retinal Detachment / Q000601:surgery*; D012591:Scleral Buckling; D012598:Sclerosis; D014129:Trabecular Meshwork / Q000473:pathology / Q000601:surgery*; D014792:Visual Acuity; D014821:Vitrectomy