Single-Use Lens Compromise During Selective Laser Trabeculoplasty.

Area of Science:

• Ophthalmology
• Glaucoma treatment
• Laser therapy

Background:

• Disposable selective laser trabeculoplasty (SLT) lenses may sustain damage during use.
• This damage could potentially impact the therapeutic effectiveness of SLT procedures.
• Understanding factors influencing lens damage and its consequences is crucial for optimizing glaucoma management.

Purpose of the Study:

• To identify factors associated with the magnitude of damage to disposable SLT lenses.
• To determine the effect of lens damage on patient treatment outcomes, specifically intraocular pressure (IOP) reduction.
• To evaluate the relationship between laser energy parameters and lens damage.

Main Methods:

• Analysis of 113 eyes from 82 patients undergoing SLT between 2020-2021.
• Recording of baseline patient characteristics, procedure settings, physician age, and area of lens damage.
• Calculation of treatment response as the difference between pre- and post-operative IOP.

Main Results:

• Lens damage area positively correlated with total laser energy (r=0.34) and mean energy per application (r=0.37).
• Increased lens damage was associated with diminished IOP reduction (r=-0.19).
• Lens damage was not linked to patient glaucoma severity indicators or user settings; higher pre-op IOP and smaller cup-to-disc ratio predicted greater IOP reduction.

Conclusions:

• Higher laser energy contributes to disposable SLT lens damage.
• Significant lens damage is linked to reduced effectiveness of SLT in lowering IOP.
• Findings suggest a need to re-evaluate the routine use of disposable SLT lenses in clinical practice.