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Pattern scanning laser trabeculoplasty compares well with selective laser trabeculoplasty
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CORONADO, Calif. — Results obtained with pattern scanning laser trabeculoplasty and selective laser trabeculoplasty were similarly effective, according to a scientific poster presented at the American Glaucoma Society meeting here.
Kaweh Mansouri, MD, and colleagues compared the safety, efficacy and tolerability of pattern scanning laser trabeculoplasty (PSLT) vs. selective laser trabeculoplasty (SLT).
The study was the first prospective, randomized analysis comparing the two treatment modalities, the authors wrote.
The study included 46 eyes of 23 patients with untreated open-angle glaucoma. Patients underwent PSLT in one eye and SLT in the other eye.
The Pascal Streamline 577 laser (Topcon Medical Systems) was used to perform PSLT. SLT was performed with the Tango laser (Ellex).
Laser treatment was applied in four quadrants. Average treatment duration was 4.9 minutes for PSLT and 9.6 minutes for SLT.
Efficacy of each treatment modality was evaluated at 2 months. Complete success was defined as an IOP reduction of 20% or more without medications.
The visual analog scale was used to gauge the comfort level of each laser.
At 2 months, IOP was reduced from 20.3 mm Hg at baseline to 15.4 mm Hg (24%) in the PSLT group and from 20.9 mm Hg at baseline to 14.9 mm Hg (28%) in the SLT group.
Patients considered PSLT to be more comfortable than SLT.
One potential limitation of the study was the difficulty of estimating appropriate energy levels with PSLT. –
Disclosure: Mansouri reports he is a consultant for Sensimed.