Selective laser trabeculoplasty: predictive value of early intraocular pressure measurements for success at 3 months.

Aim: To determine the predictive value of the 2 week post-selective laser trabeculoplasty (SIT) intraocular pressure (lOP) 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 lOP. 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 lop of >1 mmHg at 2 weeks postoperatively, 99.24% continued to show a lowered lOP 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 lOP. These findings suggest that those patients who had a decreased lOP at 2 weeks and are at their goal lOP may not need to be screened until 3 months postoperatively. [ABSTRACT FROM AUTHOR]