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CompletedNCT03751631MIST-1Updated Mar 18, 2022Results posted

Safety and Efficacy of Phenylephrine 2.5%-Tropicamide 1% Microdose Ophthalmic Solution for Pupil Dilation

A Phase 3 interventional study of Tropicamide 1%-Phenylephrine 2.5% ophthalmic solution (TR/PE) and Tropicamide 1% ophthalmic solution (TR) in Mydriasis, sponsored by Eyenovia Inc.. Completed at 1 site in United States. Per ClinicalTrials.gov, last updated 2022-03-18.

Sponsored by Eyenovia Inc. · Phase 3, Interventional, and Diagnostic

Phase
Phase 3
Study type
Interventional
Enrollment
70
Allocation
Randomized
Sex
All
01

Study summary

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.

Read the detailed description

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.

02

Conditions studied

  • Mydriasis

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03

In context

Mydriasis

37 studies on the registry are indexed under Mydriasis; 4 are open to participants now.

This study's enrollment of 70 is above the median of 61 across 35 interventional studies indexed under Mydriasis.

Browse Mydriasis studies →

Lead sponsor

Eyenovia Inc. is the lead sponsor of 9 studies on the registry; none are open to participants now.

Of its 6 completed or terminated interventional studies of FDA-regulated products, 3 (50%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
Child (0–17), Adult (18–64), Older adult (65+)
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Ability to provide written consent and return for all study visits
  • Photopic pupil diameter \<= 3.5 mm in each eye

Exclusion criteria

Exclusion Criteria:

  • Allergy to phenylephrine hydrochloride, tropicamide, or benzalkonium chloride
  • History of benign prostatic hyperplasia
  • Use of a benzodiazepine, monoamine oxidase inhibitor, tricyclic antidepressant, anticonvulsant, or cholinergic drug
  • History of closed-angle glaucoma
  • Anatomically narrow anterior chamber angles
  • Ocular surgery or laser treatment of any kind
  • History of chronic or acute uveitis
  • History of traumatic iritis or hyphema
  • History of traumatic mydriasis or angle recession
  • History of heterochromia
  • Irregularly-shaped pupil secondary to ocular trauma or congenital defect.
  • History of neurogenic pupil disorder
  • History of anterior chamber intraocular lens (IOL) or iris-fixated IOL
  • History of iris surgery, iris atrophy, or iris-cornea apposition/touch
  • Unwilling or unable to discontinue use of contact lenses at treatment visits.
  • Current active eye disease for which topical or systemic ophthalmic medication is necessary, except for dry eye disease managed using artificial tears.
  • Presence of a severe/serious ocular condition, or any other unstable medical condition that, in the Investigator's opinion, may preclude study treatment and/or follow-up
  • Pregnancy or lactation
05

Study design

Phase
Phase 3
Primary purpose
Diagnostic
Allocation
Randomized
Intervention model
Crossover assignment
Masking
Double (Participant, Outcomes assessor)
Enrollment
70 participants (actual)

Study arms

  • Other
    1-TR/PE, 2-TR, 3-PE

    Participants were dosed once at 3 separate clinic visits in accordance with this sequence. Each participant received 2 sprays of the study drug in each eye.

    Drug: Tropicamide 1%-Phenylephrine 2.5% ophthalmic solution (TR/PE) · Drug: Tropicamide 1% ophthalmic solution (TR) · Drug: Phenylephrine 2.5% ophthalmic solution (PE)

  • Other
    1-TR/PE, 2-PE, 3-TR

    Participants were dosed once at 3 separate clinic visits in accordance with this sequence. Each participant received 2 sprays of the study drug in each eye.

    Drug: Tropicamide 1%-Phenylephrine 2.5% ophthalmic solution (TR/PE) · Drug: Tropicamide 1% ophthalmic solution (TR) · Drug: Phenylephrine 2.5% ophthalmic solution (PE)

  • Other
    1-TR, 2-TR/PE, 3-PE

    Participants were dosed once at 3 separate clinic visits in accordance with this sequence. Each participant received 2 sprays of the study drug in each eye.

    Drug: Tropicamide 1%-Phenylephrine 2.5% ophthalmic solution (TR/PE) · Drug: Tropicamide 1% ophthalmic solution (TR) · Drug: Phenylephrine 2.5% ophthalmic solution (PE)

  • Other
    1-TR, 2-PE, 3-TR/PE

    Participants were dosed once at 3 separate clinic visits in accordance with this sequence. Each participant received 2 sprays of the study drug in each eye.

    Drug: Tropicamide 1%-Phenylephrine 2.5% ophthalmic solution (TR/PE) · Drug: Tropicamide 1% ophthalmic solution (TR) · Drug: Phenylephrine 2.5% ophthalmic solution (PE)

  • Other
    1-PE, 2-TR/PE, 3-TR

    Participants were dosed once at 3 separate clinic visits in accordance with this sequence. Each participant received 2 sprays of the study drug in each eye.

    Drug: Tropicamide 1%-Phenylephrine 2.5% ophthalmic solution (TR/PE) · Drug: Tropicamide 1% ophthalmic solution (TR) · Drug: Phenylephrine 2.5% ophthalmic solution (PE)

  • Other
    1-PE, 2-TR, 3-TR/PE

    Participants were dosed once at 3 separate clinic visits in accordance with this sequence. Each participant received 2 sprays of the study drug in each eye.

    Drug: Tropicamide 1%-Phenylephrine 2.5% ophthalmic solution (TR/PE) · Drug: Tropicamide 1% ophthalmic solution (TR) · Drug: Phenylephrine 2.5% ophthalmic solution (PE)

Interventions

  • DrugTropicamide 1%-Phenylephrine 2.5% ophthalmic solution (TR/PE)

    Drug page: Tropicamide

    Fixed combination tropicamide 1%-phenylephrine 2.5% ophthalmic solution administered with the Optejet microdose dispenser

    Also known as: Mydcombi

  • DrugTropicamide 1% ophthalmic solution (TR)

    Tropicamide 1% ophthalmic solution administered with the Optejet microdose dispenser

  • DrugPhenylephrine 2.5% ophthalmic solution (PE)

    Phenylephrine 2.5% ophthalmic solution administered with the Optejet microdose dispenser

06

What researchers measure

Primary outcomes

  1. 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

Other outcomes

  1. Percentage of Eyes Achieving Pupil Diameter 6.0 mm or Larger After Receipt of Each Medication

    The percent of eyes with pupil diameter 6.0 mm or larger as measured using pupillometry in highly photopic conditions. As this is a cross-over study, each of the 62 participants received each medication. Data is reported separately for the right and left eyes of the 62 participants. A higher percentage indicates a better outcome.

    Time frame: 35 minutes after initial dose

  2. Percentage of Eyes Achieving Pupil Diameter 7.0 mm or Larger After Receipt of Each Medication

    The percent of eyes with pupil diameter 7.0 mm or larger as measured using pupillometry in highly photopic conditions. As this is a cross-over study, each of the 62 participants received each medication. Data is reported separately for the right and left eyes of the 62 participants. A higher percentage indicates a better outcome.

    Time frame: 35 minutes after initial dose

07

Results

Posted Mar 18, 2022

Participant flow

70 patients signed the study informed consent form and were screened for eligibility between October 31, 2018 and November 16, 2018 at a clinical research center located in Cypress, California.

Participant flow — Overall Study
MilestoneTR/PE - TR - PETR/PE - PE - TRTR - TR/PE - PETR - PE - TR/PEPE - TR/PE - TRPE - TR - TR/PE
Started101111111011
Received 1st drug in sequence101111111011
Received 2nd drug in sequence101110101011
Received 3rd drug in sequence101110101011
Completed101110101011
Not completed001100
Withdrew: Withdrawal by subject001100

Outcome measures

PrimaryChange 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
Reported as:
Mean · millimeters
Change in Pupil Diameter From Baseline
millimetersTR/PE - Right EyeTR/PE - Left EyeTR - Right EyeTR - Left EyePE - Right EyePE - Left Eye
Baseline pupil diameter2.672 ± 0.56732.583 ± 0.46742.657 ± 0.60162.569 ± 0.52112.651 ± 0.57492.584 ± 0.5344
35-minute pupil diameter7.301 ± 0.89437.329 ± 0.97716.762 ± 0.86196.690 ± 0.86823.388 ± 0.89503.552 ± 0.9340
Change in 35-minute pupil diameter4.629 ± 0.83434.746 ± 0.81734.105 ± 0.72074.121 ± 0.68390.737 ± 0.79390.969 ± 0.8943
Other pre-specifiedPercentage of Eyes Achieving Pupil Diameter 6.0 mm or Larger After Receipt of Each Medication

The percent of eyes with pupil diameter 6.0 mm or larger as measured using pupillometry in highly photopic conditions. As this is a cross-over study, each of the 62 participants received each medication. Data is reported separately for the right and left eyes of the 62 participants. A higher percentage indicates a better outcome.

Time frame:
35 minutes after initial dose
Reported as:
Number · percentage of eyes
Percentage of Eyes Achieving Pupil Diameter 6.0 mm or Larger After Receipt of Each Medication
percentage of eyesTR/PE - Right EyeTR/PE - Left EyeTR - Right EyeTR - Left EyePE - Right EyePE - Left Eye
Percentage of Eyes Achieving Pupil Diameter 6.0 mm or Larger After Receipt of Each Medication95.293.579.077.41.61.6
Other pre-specifiedPercentage of Eyes Achieving Pupil Diameter 7.0 mm or Larger After Receipt of Each Medication

The percent of eyes with pupil diameter 7.0 mm or larger as measured using pupillometry in highly photopic conditions. As this is a cross-over study, each of the 62 participants received each medication. Data is reported separately for the right and left eyes of the 62 participants. A higher percentage indicates a better outcome.

Time frame:
35 minutes after initial dose
Reported as:
Number · percentage of eyes
Percentage of Eyes Achieving Pupil Diameter 7.0 mm or Larger After Receipt of Each Medication
percentage of eyesTR/PE - Right EyeTR/PE - Left EyeTR - Right EyeTR - Left EyePE - Right EyePE - Left Eye
Percentage of Eyes Achieving Pupil Diameter 7.0 mm or Larger After Receipt of Each Medication67.767.743.541.900

Adverse events

Collected over Adverse event data was collected over each subject's study participation period, which was a maximum of 14 days. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Tropicamide/Phenylephrine0/62 (0%)0/62 (0%)2/62 (3.2%)
Tropicamide0/64 (0%)0/64 (0%)4/64 (6.3%)
Phenylephrine0/62 (0%)0/62 (0%)4/62 (6.5%)
Most frequent other events
Most frequent other events
EventTropicamide/PhenylephrineTropicamidePhenylephrine
Vision blurredEye disorders1/623/641/62
Visual acuity reducedEye disorders1/621/641/62
Vital dye staining cornea presentInvestigations0/620/641/62
Eye painEye disorders0/620/641/62

Baseline characteristics

Age, Continuous
Age, Continuous(years)All Participants
Mean39.4 ± 12.00
Sex: Female, Male
Sex: Female, Male(Participants)All Participants
Female27
Male37
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)All Participants
Hispanic or Latino22
Not Hispanic or Latino42
Unknown or Not Reported0
Race (NIH/OMB)
Race (NIH/OMB)(Participants)All Participants
American Indian or Alaska Native0
Asian8
Native Hawaiian or Other Pacific Islander0
Black or African American19
White35
More than one race2
Unknown or Not Reported0
Region of Enrollment
Region of Enrollment(participants)All Participants
United States64
Iris color category
Iris color category(Participants)All Participants
Dark54
Light10
08

Study locations

1 site
  • WCCT
    Cypress, California 90630, United States
09

References and documents

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: No

10

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Nov 2018 to primary completion in Jan 2019, 1 month.

Results were first posted in Mar 2022, 3 years 2 months after primary completion. A results delay was requested in Jan 2020.

How these figures are worked out, and which studies are left out of them.

Registered
Nov 14, 2018
First posted
Nov 23, 2018
StartActual
Nov 15, 2018
Primary completionActual
Jan 11, 2019
CompletionActual
Jan 11, 2019
Results delay requested
Jan 31, 2020
Results first posted
Mar 18, 2022
Last update
Mar 18, 2022
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Mar 18, 2022, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT03751631
Lead sponsor
Eyenovia Inc.
Responsible party
Sponsor
First posted
Nov 23, 2018
Start date
Nov 15, 2018
Primary completion
Jan 11, 2019
Completion
Jan 11, 2019
Results posted
Mar 18, 2022
Last update
Mar 18, 2022

Study contacts

Tsontcho Ianchulev, MD, MPH
study director · Eyenovia Inc.

Oversight

Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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Studies of the drugs tested here: Tropicamide · Phenylephrine

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Eyenovia Inc.

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