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Related Experiment Videos

Pilocarpine spray: an alternative delivery method

E A Doe1, J A Campagna

  • 1Opthalmology Surgery Service, Brooke Army Medical Center, Fort Sam Houston, Texas 78234-6200, USA.

Journal of Ocular Pharmacology and Therapeutics : the Official Journal of the Association for Ocular Pharmacology and Therapeutics
|March 11, 1998
PubMed
Summary

Pilocarpine 4% spray effectively induces miosis, a pupil constriction, when applied to closed eyelids. This study demonstrates pilocarpine spray as a viable method for achieving intraocular miosis in patients.

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Area of Science:

  • Ophthalmology
  • Pharmacology

Background:

  • Miosis, or pupil constriction, is crucial for certain ophthalmic procedures.
  • Traditional pilocarpine delivery methods can be invasive or inconvenient.

Purpose of the Study:

  • To evaluate the efficacy of pilocarpine 4% spray in inducing miosis.
  • To assess pilocarpine spray as a novel delivery modality for intraocular effects.

Main Methods:

  • Eleven eyes of ten patients undergoing laser peripheral iridotomy received pilocarpine 4% spray on closed eyelids.
  • Pupil diameter was measured using standardized photographs before and 30 minutes after spray application.
  • Contralateral eyes served as controls.

Main Results:

  • All treated eyes demonstrated significant miosis.

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  • Mean pupil diameter decreased from 4.1+/-0.9 mm to 1.5+/-0.3 mm post-spray (p < 0.0001).
  • The average reduction in pupil diameter was 2.6+/-0.9 mm, compared to negligible change in control eyes (p < 0.0001).

    • Conclusions:

    • Pilocarpine 4% spray is an effective method for inducing intraocular miosis.
    • The spray delivery offers a potentially convenient and effective alternative for pilocarpine administration.