University of California, Berkeley
Berkeley, California, 94720-2020, United States
NCT Number: NCT07674966
The goal of this clinical study is to learn about the short-term physiological effects of low-dose atropine in healthy volunteers. The study seeks to examine three questions related to low-dose topically applied ophthalmic atropine:
1. Does applying two drops of 0.01% atropine sulfate solution cause the same clinical effects as one drop of 0.02% atropine? 2. How quickly do the pupil responses and accommodative amplitudes recover following a dose of 0.01% atropine, 0.02% atropine, and 0.05% atropine? 3. Does applying a single drop of 0.02% atropine sulfate solution cause the same clinical effects in participants with light vs. dark iris colors? Participants will have their pupil size and accommodative status measured at appropriate intervals to answer the questions above.
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Notify Me18 year–40 year
All sexes
Interventional
Phase 1
Berkeley, California, 94720-2020, United States
Healthy volunteers accepted: No
Only the study team can determine whether someone qualifies for participation.
Inclusion criteria
Exclusion criteria
Two drops of 0.01% atropine sulfate solution
One drop of 0.02% atropine sulfate solution
Atropine 0.05% Ophthalmic Solution
Time frame: 1-24 hours after drop application
Dynamic pupil responses to a single pulse of light were measured 1 hour, 2 hours, 4 hours, 8 hours, and 24 hours after instilling the drop(s). The smallest pupil size (maximum pupil restriction) was used as the primary outcome measure.
Time frame: 1-24 hours after drop application
Subjective accommodative response was measured via the pull-away AA method.
University of California, Berkeley
Other
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