This study evaluated pupil dilation after administration of fixed combination tropicamide-phenylephrine (TR/PE) vs. phenylephrine (PE) alone and tropicamide (TR) alone. Participants attended 3 visits. At each visit, after baseline measurements, 1 of the 3 drugs was administered to both eyes, then pupil dilation and safety assessments were performed at specific time intervals.
Volunteer participants were screened for study eligibility during a Screening Visit and enrolled after signing the study-specific informed consent form. Subjects meeting all inclusion/exclusion criteria were scheduled for 3 treatment visits, which were at least 2 days, but no more than 7 days apart. At each treatment visit, baseline measurements were taken, then 1 of the 3 study drugs was administered to both eyes (each participant's drug administration sequence was randomly determined). Afterwards, efficacy and safety assessments were performed at 20, 35, 50, 65, 80, 120, and 180 minutes.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
DIAGNOSTIC
Masking
DOUBLE
Enrollment
70
Fixed combination tropicamide 1%-phenylephrine 2.5% ophthalmic solution administered with the Optejet microdose dispenser
Tropicamide 1% ophthalmic solution administered with the Optejet microdose dispenser
Phenylephrine 2.5% ophthalmic solution administered with the Optejet microdose dispenser
WCCT
Cypress, California, United States
Change in Pupil Diameter From Baseline
Difference in 35-minute pupil diameter vs. baseline measured using pupillometry in highly photopic conditions. Pupil diameter is reported in millimeters. For the change in pupil diameter, larger measurements indicate a better outcome.
Time frame: 35 minutes after initial dose
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