Outcomes of Selective Laser Trabeculoplasty After Prior Incisional Surgery for Open Angle Glaucoma

Area of Science:

• Ophthalmology
• Glaucoma Management
• Laser Therapy

Background:

• Open-angle glaucoma (OAG) management often requires multiple interventions.
• Previous incisional glaucoma surgery (trabeculectomy or tube shunt) can present challenges for further IOP reduction.
• Selective Laser Trabeculoplasty (SLT) is a minimally invasive laser procedure for glaucoma.

Purpose of the Study:

• To evaluate the efficacy and safety of SLT in lowering intraocular pressure (IOP) in patients with OAG who have previously undergone incisional glaucoma surgery.
• To compare the IOP-lowering effect and tolerability of SLT in patients with prior incisional surgery versus a control group.

Main Methods:

• Retrospective case series including OAG patients with prior trabeculectomy or tube shunt surgery who received SLT.
• An age-matched control group without prior incisional surgery was included for comparison.
• Intraocular pressure (IOP) and medication usage were recorded at multiple follow-up intervals post-SLT.

Main Results:

• SLT treatment led to a statistically significant reduction in IOP in the study group (from 19.5±4.7 to 16.7±5.2 mmHg).
• No significant difference in IOP reduction or change in medication use was observed between the study group and the control group.
• Primary success rates at 12 months were comparable between groups (26.7% vs. 24.4%), with no persistent complications reported.

Conclusions:

• Selective Laser Trabeculoplasty (SLT) is an effective treatment for lowering IOP in patients with open-angle glaucoma who have a history of incisional glaucoma surgery.
• SLT should be considered as a therapeutic option for select patients with OAG and prior incisional glaucoma surgery.
• The IOP-lowering effect and safety profile of SLT appear consistent in patients with and without prior incisional glaucoma surgery.