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Apraclonidine and argon laser trabeculoplasty
P C Holmwood1, R D Chase, T Krupin
1Department of Ophthalmology, Northwestern University Medical School, Chicago, Illinois.
American Journal of Ophthalmology
|July 15, 1992
Summary
Administering apraclonidine (1%) immediately after argon laser trabeculoplasty effectively controls intraocular pressure. This single post-operative dose is as effective as pre-operative and post-operative dosing for glaucoma patients.
Area of Science:
- Ophthalmology
- Pharmacology
Background:
- Open-angle glaucoma is a leading cause of irreversible blindness.
- Elevated intraocular pressure (IOP) is a primary risk factor for glaucoma progression.
- Argon laser trabeculoplasty is a common surgical intervention to lower IOP.
Purpose of the Study:
- To evaluate the efficacy of different apraclonidine dosing regimens in managing IOP after argon laser trabeculoplasty.
- To determine if pre-operative apraclonidine administration is necessary for IOP control post-procedure.
Main Methods:
- Sixty patients with medically uncontrolled open-angle glaucoma were randomized into two groups.
- Group 1 received apraclonidine 1% one hour before and immediately after laser treatment.
- Group 2 received apraclonidine 1% only immediately after laser treatment.
Main Results:
- Both treatment regimens demonstrated similar efficacy in preventing IOP spikes one and two hours post-trabeculoplasty.
- No significant differences in mean IOP or percent change in IOP were observed between the groups.
- Intraocular pressure before treatment and laser settings were comparable across both groups.
Conclusions:
- A single instillation of apraclonidine 1% immediately after argon laser trabeculoplasty is sufficient to prevent postoperative IOP increase.
- Pre-operative apraclonidine administration does not offer additional IOP-lowering benefits in this context.
- This finding simplifies postoperative management protocols for patients undergoing laser trabeculoplasty.