title: Selective laser trabeculoplasty for primary angle closure with persistently elevated intraocular pressure after iridotomy.
abstract: OBJECTIVE
  To determine whether selective laser trabeculoplasty (SLT) can lower intraocular pressure (IOP) in eyes with chronic primary angle closure, elevated IOP, and a patent iridotomy.
  
  
  METHODS
  Patients with chronic angle closure who had underwent iridotomy, had an IOP greater than 21 mm Hg and a gonioscopically visible pigmented trabecular meshwork for at least 90 degrees were enrolled. SLT was applied to open angle segments. Duration of follow-up was 6 months.
  
  
  RESULTS
  Sixty eyes of 60 patients were enrolled. The mean baseline IOP was 24.6+/-2.5 mm Hg. At 6 months, IOP reduction of > or =3 mm Hg or 4 mm Hg was measured in 82% and 72% of eyes, respectively, and IOP reduction of > or =20% or 30% was measured in 54% and 24% of eyes, respectively. When only eyes that were treated with the same number or fewer medications were considered, these IOP reductions were measured in 67%, 58%, 43%, and 15%, respectively. During the study period 1 eye (1.7%) required trabeculectomy owing to IOP elevation shortly after the SLT. There were no other significant complications attributable to SLT.
  
  
  CONCLUSIONS
  SLT seems to be a safe and effective method of reducing IOP in many eyes with primary angle closure and a patent iridotomy in which there is a sufficient extent of visible trabecular meshwork.
authors.affiliation: Department of Ophthalmology, Singapore National Eye Center, Tan Tock Seng Hospital, Singapore.
authors.forename: Ching Lin
authors.initials: CL
authors.lastname: Ho
authors.forename: Jimmy S M
authors.initials: JS
authors.lastname: Lai
authors.forename: Mario V
authors.initials: MV
authors.lastname: Aquino
authors.forename: Prin
authors.initials: P
authors.lastname: Rojanapongpun
authors.forename: Hon Tym
authors.initials: HT
authors.lastname: Wong
authors.forename: Ma Cecilia
authors.initials: MC
authors.lastname: Aquino
authors.forename: Yariv
authors.initials: Y
authors.lastname: Gerber
authors.forename: Michael
authors.initials: M
authors.lastname: Belkin
authors.forename: Yaniv
authors.initials: Y
authors.lastname: Barkana
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D002908:Chronic Disease; D005260:Female; D005500:Follow-Up Studies; D015812:Glaucoma, Angle-Closure / Q000601:surgery*; D006068:Gonioscopy; D006801:Humans; D007429:Intraocular Pressure; D032801:Iridectomy; D007498:Iris / Q000601:surgery; D053685:Laser Therapy / Q000379:methods*; D008297:Male; D008875:Middle Aged; D009798:Ocular Hypertension / Q000601:surgery; D012086:Reoperation; D014129:Trabecular Meshwork / Q000601:surgery; D014130:Trabeculectomy / Q000379:methods*