Related Experiment Videos
Long-term results with argon laser trabeculoplasty
W E Gillies1, I W Dallison, A M Brooks
1Glaucoma Investigation and Research Unit, Royal Victorian Eye and Ear Hospital, East Melbourne.
Australian and New Zealand Journal of Ophthalmology
|February 1, 1994
Summary
Argon laser trabeculoplasty (ALT) lowers intraocular pressure (IOP) long-term. Achieving IOP control at 15 mmHg or less optimally slows visual field loss in glaucoma patients.
Area of Science:
- Ophthalmology
- Glaucoma Research
- Surgical Interventions
Background:
- The long-term efficacy of argon laser trabeculoplasty (ALT) remains a subject of ongoing clinical debate.
- Assessing the sustained effects of ALT is crucial for guiding glaucoma management strategies.
Purpose of the Study:
- To evaluate the long-term effectiveness of argon laser trabeculoplasty (ALT) in controlling intraocular pressure (IOP) and preserving visual fields.
- To determine the relationship between IOP control levels and the progression of visual field loss after ALT.
Main Methods:
- Retrospective review of 102 patients who underwent ALT 9-11 years prior.
- Follow-up data collected at a mean of 9.5 years, including IOP measurements and visual field assessments.
- Analysis of visual field progression based on different IOP control ranges.
Main Results:
- Thirty eyes (22 patients) showed a sustained IOP reduction from 23 +/- 7 mmHg to 17 +/- 4 mmHg at 9.5 years.
- Eyes with IOP controlled at <= 15 mmHg experienced a mean additional visual field loss of 5% +/- 4%.
- Eyes with IOP > 20 mmHg showed a significantly greater mean additional field loss of 22% +/- 24%.
Conclusions:
- Argon laser trabeculoplasty, combined with medical therapy, provides long-term IOP reduction.
- Optimal visual field preservation is associated with achieving and maintaining intraocular pressure at 15 mmHg or lower post-ALT.