title: Selective laser trabeculoplasty: predictive value of early intraocular pressure measurements for success at 3 months.
abstract: OBJECTIVE
  To determine the predictive value of the 2 week post-selective laser trabeculoplasty (SLT) intraocular pressure (IOP) by comparing it to the 4 week and 3 month values.
  
  
  METHODS
  A retrospective chart review of eyes that underwent SLT between 2001 and 2004 was performed. The primary outcome measure was IOP. Demographic and medical data were collected for correlational analysis.
  
  
  RESULTS
  132 eyes of 95 patients were identified, none was excluded. Of the eyes that exhibited a decrease in IOP of >1 mm Hg at 2 weeks postoperatively, 99.24% continued to show a lowered IOP at the 4 week and 3 month visits. For these patients, the Pearson's r value between 2 weeks and 4 weeks was 0.708 (p value = 0.01) while the r value between 2 weeks and 3 months was 0.513 (p value = 0.01).
  
  
  CONCLUSIONS
  The 2 week visit post-SLT predicted the 4 week and 3 month visits if the 2 week visit demonstrated a decrease in IOP. These findings suggest that those patients who had a decreased IOP at 2 weeks and are at their goal IOP may not need to be screened until 3 months postoperatively.
authors.affiliation: Massachusetts Eye and Ear Infirmary, 243 Charles Street, Boston, MA 02114, USA.
authors.forename: P B
authors.initials: PB
authors.lastname: Johnson
authors.forename: L J
authors.initials: LJ
authors.lastname: Katz
authors.forename: D J
authors.initials: DJ
authors.lastname: Rhee
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D005901:Glaucoma / Q000503:physiopathology / Q000601:surgery*; D005902:Glaucoma, Open-Angle / Q000503:physiopathology / Q000601:surgery; D006801:Humans; D007429:Intraocular Pressure; D053685:Laser Therapy; D008134:Long-Term Care / Q000379:methods; D008297:Male; D008875:Middle Aged; D011182:Postoperative Care / Q000379:methods*; D011379:Prognosis; D012189:Retrospective Studies; D014130:Trabeculectomy / Q000379:methods*; D016896:Treatment Outcome