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Atropine cycloplegia: how many instillations does one need?
C Stolovitch1, A Loewenstein, P Nemmet
1Department of Ophthalmology, Ichilov Hospital, Tel Aviv, Israel.
Summary
Four atropine eye drop instillations effectively induce cycloplegia, matching the effect of eight. This finding suggests a potentially reduced dosing regimen for atropine cycloplegia, minimizing side effects.
Area of Science:
- Ophthalmology
- Pharmacology
Background:
- Atropine is a widely recognized and effective cycloplegic agent.
- Despite its general safety, atropine can cause local and systemic side effects.
- Current recommendations involve 7 to 10 atropine instillations over 3 to 4 days for cycloplegia.
Purpose of the Study:
- To compare the cycloplegic efficacy of four versus eight atropine drop instillations.
- To evaluate if an increased number of atropine instillations enhances cycloplegia.
Main Methods:
- A comparative study was conducted.
- The cycloplegic effect of four atropine instillations was assessed.
- The cycloplegic effect of eight atropine instillations was assessed.
Main Results:
- The degree of cycloplegia achieved with four atropine instillations was comparable to that achieved with eight instillations.
- Increasing the number of atropine instillations from four to eight did not result in a greater cycloplegic effect.
Conclusions:
- Four instillations of atropine drops appear sufficient to achieve maximal cycloplegia.
- A reduced dosing regimen of atropine may be possible, potentially decreasing the risk of side effects.