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Related Experiment Videos

Intraocular pressure decrease in normal volunteers following timolol ophthalmic solution.

I M Katz, W A Hubbard, A J Getson

    Investigative Ophthalmology
    |June 1, 1976
    PubMed
    Summary
    This summary is machine-generated.

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    Timolol ophthalmic solutions effectively reduce intraocular pressure in healthy volunteers. This study found no significant ocular irritation or systemic effects from topical timolol application.

    Area of Science:

    • Ophthalmology
    • Pharmacology

    Background:

    • Elevated intraocular pressure (IOP) is a risk factor for glaucoma.
    • Timolol is a beta-blocker used to manage IOP.

    Purpose of the Study:

    • To evaluate the efficacy and safety of different concentrations of timolol ophthalmic solutions in reducing IOP.
    • To assess the onset, duration, and systemic effects of topical timolol.

    Main Methods:

    • Normal human volunteers received topical application of timolol ophthalmic solutions (0.5%, 1.0%, 1.5%).
    • Intraocular pressure was measured over a seven-hour period.
    • Ocular irritation, pupillary size, visual acuity, blood pressure, and pulse rate were monitored.

    Main Results:

    • All tested concentrations of timolol ophthalmic solutions significantly lowered IOP.

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  • Maximum IOP reduction occurred within 1-2 hours, with effects lasting for 7 hours.
  • No ocular irritation or adverse systemic effects (pupil size, visual acuity, blood pressure, pulse) were observed.

    • Conclusions:

    • Timolol ophthalmic solutions are effective in lowering IOP in normal subjects.
    • The drug demonstrates a favorable safety profile with minimal ocular and systemic side effects.