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Related Experiment Videos

Tonic pupil: a simple screening test

B R Younge, Z J Buski

    Canadian Journal of Ophthalmology. Journal Canadien D'Ophtalmologie
    |October 1, 1976
    PubMed
    Summary
    This summary is machine-generated.

    Dilute pilocarpine can confirm Adie's pupil diagnosis. A 0.1% concentration is recommended for clinical use, avoiding false positives seen with higher doses or insufficient responses from lower doses.

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    Area of Science:

    • Ophthalmology
    • Neuroscience

    Background:

    • The tonic pupil, also known as Adie's pupil, presents distinct characteristics in response to light and near stimuli.
    • Pharmacological testing for tonic pupil diagnosis is limited due to the discontinuation of methacholine (Mecholyl).

    Purpose of the Study:

    • To evaluate the efficacy of dilute pilocarpine concentrations in diagnosing tonic pupil.
    • To determine the optimal pilocarpine concentration for clinical use in confirming Adie's pupil.

    Main Methods:

    • A study involving 25 patients diagnosed with tonic pupil and a separate control group.
    • Pupil responses were observed using varying concentrations of dilute pilocarpine (0.05%, 0.1%, and 0.2%).

    Main Results:

    • Pilocarpine concentrations of 0.05% yielded insufficient diagnostic response.

    Related Experiment Videos

  • A 0.2% pilocarpine concentration resulted in a high rate of false-positive reactions in the control group.
  • The 0.1% pilocarpine concentration demonstrated suitable diagnostic accuracy and minimal false positives.

    • Conclusions:

    • 0.1% dilute pilocarpine is an effective and recommended concentration for the pharmacological confirmation of tonic pupil (Adie's pupil).
    • This concentration offers a balance between sufficient diagnostic response and avoidance of false positives in clinical settings.