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Ocular effects of scopolamine dermal patch in open-angle glaucoma.
T L Maus1, L I Larsson, R F Brubaker
1Department of Ophthalmology, Mayo Clinic and Mayo Foundation, Rochester, Minnesota, U.S.A.
Journal of Glaucoma
|November 19, 2009
Summary
Transdermal scopolamine patches are safe for open-angle glaucoma patients, showing no significant impact on intraocular pressure. The study found increased pupil size and anterior chamber volume with minimal side effects.
Area of Science:
- Ophthalmology
- Pharmacology
Background:
- Open-angle glaucoma is a leading cause of irreversible blindness.
- Managing intraocular pressure is crucial in glaucoma treatment.
- The effects of anticholinergic medications on ocular parameters in glaucoma patients require careful evaluation.
Purpose of the Study:
- To investigate the impact of transdermal scopolamine patches on intraocular pressure (IOP), pupil size, anterior chamber volume, and accommodation.
- To assess the safety and ocular effects of scopolamine in patients with open-angle glaucoma.
Main Methods:
- A double-masked, randomized, placebo-controlled study involving 40 patients with chronic open-angle glaucoma.
- Patients were divided into two groups: those on pilocarpine treatment (Pilo Group) and those not on cholinergic drugs (Non-Pilo Group).
- Ocular parameters including pupil size, anterior chamber volume, and accommodation were measured on scopolamine and placebo days.
Main Results:
- Transdermal scopolamine significantly increased pupil size (17% in Pilo Group, 12% in Non-Pilo Group) and anterior chamber volume (8% in Pilo Group, 11% in Non-Pilo Group).
- Accommodation, measured by near point recession, increased significantly (12% in Pilo Group, 19% in Non-Pilo Group).
- No statistically significant changes in intraocular pressure were detected in either group. Minimal side effects were reported.
Conclusions:
- Transdermal scopolamine patches can be safely used in patients with open-angle glaucoma.
- The medication does not appear to adversely affect intraocular pressure in this patient population.
- Further research may explore the long-term effects and specific benefits of scopolamine in glaucoma management.
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