Clinical Research Directory
Browse clinical research sites, groups, and studies.
Selective, Micropulse and Pattern Laser Trabeculoplasty in Medically Treated Open-angle Glaucoma.
Sponsor: University of Udine
Summary
This randomized, single-centre, three-arm trial compared three subvisible laser trabeculoplasty delivery protocols in eyes with open-angle glaucoma already receiving intraocular pressure (IOP)-lowering medication: selective laser trabeculoplasty (SLT, 3-nanosecond pulses), micropulse laser trabeculoplasty (MLT, 577 nm with 15% duty cycle), and pattern laser trabeculoplasty (PLT, 5-ms pattern delivery). Ninety eyes of 90 patients were allocated 1:1:1 to a single 360-degree session and followed for 6 months. The primary outcome was IOP at 6 months, with an equivalence margin of +/-2.0 mmHg prespecified for pairwise comparisons. Secondary outcomes were percentage IOP change, number of IOP-lowering medications, cumulative treatment success (IOP reduction of at least 20% from baseline without an increase in medications), and adverse events. Outcome assessment was performed by a second ophthalmologist masked to allocation and to clinical history.
Official title: Subvisible Laser Trabeculoplasty in Medically Treated Open-angle Glaucoma: a Randomized Three-arm Comparison of Selective, Micropulse and Pattern Delivery Protocols.
Key Details
Gender
All
Age Range
18 Years - Any
Study Type
INTERVENTIONAL
Enrollment
90
Start Date
2025-02-01
Completion Date
2026-05-01
Last Updated
2026-08-10
Healthy Volunteers
No
Conditions
Interventions
Selective laser trabeculoplasty
Nanosecond-pulse laser trabeculoplasty delivered over 360 degrees with a Tango laser (Ellex Medical Lasers, Adelaide, Australia) after two drops of pilocarpine 2% and topical anaesthetic.
Micropulse laser trabeculoplasty
Micropulsed 577-nm laser trabeculoplasty delivered over 360 degrees with an IQ 577 laser (Iridex, Mountain View, California, USA) after two drops of pilocarpine 2% and topical anaesthetic.
Pattern laser trabeculoplasty
Short-exposure pattern laser trabeculoplasty delivered over 360 degrees with a Pascal Streamline 577 (Topcon, Tokyo, Japan) after two drops of pilocarpine 2% and topical anaesthetic.
Locations (1)
Glaucoma Unit, Department of Medicine - Ophthalmology, University of Udine
Udine, UD, Italy