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CompletedNCT02946125Updated Jul 27, 2022

Study of the Safety, Efficacy and PK of EYN-1601 in Dilation of the Pupil

A Phase 2 interventional study of MDD-administered EYN-1601 and Phenylephrine 2.5% Eyedrop in Mydriasis, sponsored by Eyenovia Inc.. Completed at 1 site in United States. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2022-07-27.

Sponsored by Eyenovia Inc. · Phase 2, Interventional, and Treatment

Phase
Phase 2
Study type
Interventional
Enrollment
12
Allocation
Non-randomized
Ages
18 Years and older
Sex
All
01

Study summary

This is a Phase 2 study to investigate the safety, efficacy and pharmacokinetics of EYN-1601 for dilation of the pupil. A single microdose of EYN-1601 will be compared to single doses of commercially available phenylephrine hydrochloride 2.5% and 10% ophthalmic solutions.

Read the detailed description

EYN-1601 delivered topically as a microdose via a proprietary delivery system (the Eyenovia Multi-Dose Device [MDD] system) is being investigated for dilation of the pupil for ophthalmic examinations and procedures. Phenylephrine hydrochloride, a sympathetic α1-adrenergic agonist, has been used for pupil dilation for over 70 years. The mydriatic action of phenylephrine is due to its stimulation of the α1 receptors of the radial muscle of the iris, which causes the muscle fibers to contract and results in pupil dilation.

When conducting a variety of ophthalmological procedures, it is necessary to dilate (enlarge) the pupil to allow an unobstructed view of the lens and retina, as well as the optic nerve. The degree of pupil dilation required is somewhat dependent on the procedure being performed. Eyenovia, the Sponsor, is a specialty pharmaceutical company focused on the development of ophthalmic drug products that can be delivered in small volumes, ie, via microdosing, in order to maximize therapeutic control and minimize systemic absorption. To achieve this goal, Eyenovia is developing a drug/device combination product to allow accurate topical ocular delivery of controlled quantities of specific active pharmaceutical ingredients.

Phenylephrine has been known to cause systemic cardiovascular effects in some patients when dosed via the topical ocular route including hypertension, tachycardia, and more rarely, arrhythmia and stroke, especially in those patients with pre-existing heart conditions. These risks are even more relevant when phenylephrine hydrochloride ophthalmic solution 10% is used in circumstances where a greater degree of mydriasis is required. Microdosing with the Eyenovia MDD system is expected to significantly reduce or eliminate these risks while allowing the same degree of mydriasis produced with the currently approved products.

Subjects (healthy volunteers) will be screened for eligibility and 12 subjects that meet inclusion/exclusion criteria will be enrolled into the study. All subjects will be followed through the same pre-specified treatment visit schedule at which the 3 study drugs are administered (phenylephrine 2.5% eyedrops at Visit 1, phenylephrine 10% eyedrops at Visit 2 and EYN-1601 MDD at Visit 3). At each treatment visit, baseline measurements will be taken prior to study medication administration.

Subjects will participate in safety, efficacy, and pharmacokinetic assessments. Subsequent visits must be separated by at least 2 days but may be up to 1 week apart.

Efficacy will be assessed by measurement of pupil dilation in both eyes.

Safety assessments will include slit lamp examination (SLE) of both eyes and measurement of vital signs (blood pressure [BP]/heart rate [HR]) and adverse events, as well as an ocular discomfort survey

Absorption will be assessed through blood plasma analysis to detect free phenylephrine.

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 12 is below 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
18 Years and older
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

  • Female subjects must be 1-year , surgically sterilized, or women of with a negative urine pregnancy test at Visit 1.
  • Provide signed written consent prior to participation in any study-related procedures

Exclusion criteria

Exclusion Criteria:

  • Pregnancy or lactation.
  • History of diabetes.
  • History of cardiac, renal, or hepatic impairment or disease.
  • Allergy to phenylephrine hydrochloride.
  • Allergy to benzalkonium chloride.
  • History of closed-angle glaucoma.
  • Anatomically narrow anterior chamber angles (or Shaffer gonioscopic grade of ≥ 2 in either eye).
  • Hypertension or treatment for systemic hypertension.
  • Ocular surgery or laser treatment of any kind in the study eye within 3 months.
  • History of benign prostatic hyperplasia.
  • History of chronic or acute uveitis.
  • History of traumatic iritis or hyphema.
  • History of traumatic mydriasis or angle recession.
  • History of anxiety or panic disorders.
  • History of thyrotoxicosis, hypothyroidism, or endocrine disease.
  • Use of calcium channel blockers, angiotensin-converting enzyme (ACE) inhibitors, benzodiazepines, monoamine oxidase inhibitors, tricyclic antidepressants, anticonvulsants, and systemic (topical, inhaled, intranasal, or perianal steroids are permitted) during the study period.
  • Participation in any study of an product or device within 30 days prior to Screening or at any time during the study period.
  • Irregularly-shaped pupil secondary to ocular trauma, intraocular surgery or congenital defect.
  • History of neurogenic pupil disorder (eg, Horner's syndrome, third cranial nerve palsy, Adie's pupil, Argyl Robertson syndrome, etc.).
  • History of anterior chamber intraocular lens (IOL) or iris-fixated IOL.
  • History of iris surgery of any kind (eg, iridotomy, iridectomy, coreoplasty)
  • History of iris atrophy
  • Unwilling to discontinue use of contact lenses on the day of a treatment visit.
  • Current active eye disease other than dry eye disease (ie, any disease for which topical or systemic ophthalmic medication is necessary).
  • Use of any ophthalmic medication except unpreserved artificial tears on the day of a treatment visit.
  • Has a severe/serious ocular condition, or any other unstable medical condition that, in the Investigator's opinion, may preclude study treatment or follow-up.
Terms in these criteria, in plain language(4)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Postmenopausal

Periods have stopped for good: usually no period for 12 months in a row without another medical reason, sometimes confirmed by a blood test (FSH).

Childbearing potential

Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).

Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Crossover assignment
Masking
Single (Outcomes assessor)
Enrollment
12 participants (actual)

Study arms

  • Experimental
    MDD-administered EYN-1601

    EYN-1601 Ophthalmic Solution administered using the Eyenovia MDD

    Combination Product: MDD-administered EYN-1601

  • Active comparator
    Phenylephrine 2.5% Eyedrop

    Phenylephrine Hydrochloride Ophthalmic Solution 2.5% administered as an eyedrop

    Drug: Phenylephrine 2.5% Eyedrop

  • Active comparator
    Phenylephrine 10% Eyedrop

    Phenylephrine Hydrochloride Ophthalmic Solution 10% administered as an eyedrop

    Drug: Phenylephrine 10% Eyedrop

Interventions

  • Combination productMDD-administered EYN-1601

    Phenylephrine hydrochloride ophthalmic solution 10% formulated for microdose spray delivery

    Also known as: MiDD-administered phenylephrine hydrochloride 10%

  • Phenylephrine hydrochloride ophthalmic solution 2.5% eyedrop

  • Phenylephrine hydrochloride ophthalmic solution 10% eyedrop

06

What researchers measure

Primary outcomes

  1. Pupil Dilation

    Mean change in pupil diameter from baseline (prior to study drug administration)

    Time frame: 15, 30, 45, 60, 75, 120 and 180 minutes post administration of study drug

Secondary outcomes

  1. Blood Pressure

    Mean change in blood pressure from baseline (prior to study drug administration)

    Time frame: 10, 15, 30, 45 and 60 minutes post administration of study drug

  2. Heart Rate

    Mean change in heart rate from baseline (prior to study drug administration)

    Time frame: 10, 15, 30, 45 and 60 minutes post administration of study drug

  3. PK (Concentration of free phenylephrine in the blood plasma)

    Concentration of free phenylephrine in the blood plasma

    Time frame: 20 minutes post administration of study drug

07

Study locations

1 site
  • Artesia, California 90701, United States
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jul 27, 2022, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT02946125
Lead sponsor
Eyenovia Inc.
Responsible party
Sponsor
First posted
Oct 26, 2016
Start date
Oct 2016
Primary completion
Nov 2016
Completion
Nov 2016
Last update
Jul 27, 2022

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

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