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Pressure increase following primary laser trabeculoplasty. Effect on the visual field
Acta Ophthalmologica
|June 1, 1994
Summary
Postlaser pressure elevations after laser trabeculoplasty may not harm visual fields in glaucoma patients. Prompt detection and treatment of high intraocular pressure spikes are key to preserving vision.
Area of Science:
- Ophthalmology
- Glaucoma Research
- Laser Therapy
Background:
- Laser trabeculoplasty is a common treatment for glaucoma.
- Elevated intraocular pressure (IOP) post-procedure is a potential concern.
- Exfoliative and open-angle glaucoma are primary targets for this intervention.
Purpose of the Study:
- To investigate the potential damaging effects of postlaser intraocular pressure (IOP) elevations on the visual field.
- To determine the relationship between IOP spikes and visual field changes following laser trabeculoplasty.
Main Methods:
- Sixty-one patients with exfoliative or open-angle glaucoma underwent primary laser trabeculoplasty.
- Intraocular pressure was monitored for 24 hours post-treatment.
- Visual fields were assessed using the Humphrey visual field analyzer (C-30-2 program) before and at 1, 3, and 6 months post-procedure.
- Intervention with pressure-reducing agents was initiated if IOP reached or exceeded 50 mmHg.
Main Results:
- Fifteen patients (25%) experienced peak IOPs of 50 mmHg or higher.
- No significant correlation was found between visual field changes at 1 month and various factors including pressure increase, peak IOP, prelaser IOP, prelaser visual field indices, postlaser timolol use, or 1-month IOP levels.
- Visual field parameters remained stable between 1 and 6 months post-laser trabeculoplasty.
Conclusions:
- Postlaser pressure spikes in glaucoma patients do not appear to cause visual field damage.
- Effective management and treatment of elevated IOP following laser trabeculoplasty are crucial for maintaining visual field integrity.