Timolol, dose response and duration of action.

Area of Science:

• Ophthalmology
• Pharmacology

Background:

• Glaucoma is a leading cause of irreversible blindness.
• Effective topical treatments are crucial for managing intraocular pressure.

Purpose of the Study:

• To evaluate the dose-response relationship of timolol maleate in patients with chronic open-angle glaucoma.
• To determine the efficacy and safety of various timolol maleate concentrations.

Main Methods:

• A single-dose study involving 20 adult patients with chronic open-angle glaucoma.
• Administration of timolol maleate at concentrations of 0.1%, 0.25%, 0.5%, and 1.0%.

Main Results:

• All tested concentrations of timolol maleate demonstrated ocular hypotensive effects lasting at least 24 hours.
• The 0.5% concentration of timolol maleate appeared to yield the maximal ocular hypotensive effect.
• No local or systemic side effects were reported during the study.

Conclusions:

• Timolol maleate is a potentially effective and safe topical agent for glaucoma treatment.
• A once-daily application of timolol maleate may be sufficient for managing glaucoma.
• The 0.5% concentration shows promise for optimal therapeutic outcomes.