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Related Experiment Videos

Timolol: a 4-year follow-up study.

S Markowitz, J D Morin

    Canadian Journal of Ophthalmology. Journal Canadien D'Ophtalmologie
    |October 1, 1983
    PubMed
    Summary
    This summary is machine-generated.

    Timolol maleate effectively lowered intraocular pressure (IOP) in most ocular hypertension patients. However, IOP gradually increased over four years, necessitating regular monitoring and caution in patients with specific health conditions.

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    Area of Science:

    • Ophthalmology
    • Pharmacology

    Background:

    • Ocular hypertension is a risk factor for open-angle glaucoma.
    • Effective IOP management is crucial for preventing glaucomatous vision loss.

    Purpose of the Study:

    • To evaluate the long-term efficacy and safety of timolol maleate in patients with ocular hypertension and open angles.

    Main Methods:

    • A cohort of 25 patients with ocular hypertension and open angles were treated with timolol maleate.
    • Intraocular pressure (IOP) was monitored over a 4-year period.

    Main Results:

    • Timolol maleate lowered IOP in 71% of treated eyes, maintaining it below 22 mm Hg.
    • A gradual IOP increase of 2-4 mm Hg per year was observed, particularly in the first and third follow-up years.

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  • Visual field loss occurred in four patients, and increased optic disc cupping was noted in six patients.
  • Timolol therapy was generally well-tolerated, with few symptoms.

    • Conclusions:

    • Timolol maleate demonstrates efficacy in lowering IOP for ocular hypertension patients but requires consistent monitoring due to IOP drift.
    • Regular 3-month follow-up examinations are recommended after achieving an adequate IOP response.
    • Caution is advised when prescribing timolol to patients with asthma, bradycardia, or congestive heart failure due to potential adverse effects.