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Related Experiment Videos

Corneal changes during pilocarpine gel therapy.

D H Johnson, K R Kenyon, D L Epstein

    American Journal of Ophthalmology
    |January 15, 1986
    PubMed
    Summary

    Long-term pilocarpine gel use may cause a subtle corneal haze in 28% of patients. This visual side effect, linked to the gel formulation, can persist for years, though its long-term impact remains unknown.

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    Area of Science:

    • Ophthalmology
    • Corneal Science
    • Ophthalmic Drug Delivery

    Background:

    • Pilocarpine is a common treatment for glaucoma and ocular hypertension.
    • The delivery method of ophthalmic medications can influence their side effect profiles.
    • Long-term effects of pilocarpine gel therapy on corneal health are not well-documented.

    Purpose of the Study:

    • To investigate the occurrence and characteristics of corneal haze in patients using long-term pilocarpine gel.
    • To determine if pilocarpine gel is associated with superficial corneal haze compared to pilocarpine eyedrops.

    Main Methods:

    • A masked examination was conducted on patients undergoing long-term pilocarpine gel therapy.
    • Comparison group included patients using pilocarpine eyedrops.
    • Unilateral application of pilocarpine gel was analyzed for unilateral haze development.

    Main Results:

    • A subtle, diffuse superficial corneal haze was observed in 15 out of 53 patients (28%) receiving pilocarpine gel.
    • The corneal haze was found to be associated with the pilocarpine gel formulation.
    • The haze persisted for at least two years in most affected patients after discontinuing gel treatment.

    Conclusions:

    • Long-term use of pilocarpine gel may lead to a persistent superficial corneal haze.
    • The exact long-term consequences of this pilocarpine-induced corneal change are currently unknown.
    • Further research is needed to understand the implications of this side effect on ocular health.

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