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Tears; ExcessPhase 4NCT06080438

Effect of Topical Botulinum Toxin Eyedrop on Palpebral Fissure

A Phase 4 study testing Botulinum toxin in people with Tears; Excess and Eyelid Spasm, run by University of Miami at 1 site in United States.

Terminated

Stopped early. The study ended before it was planned to and will not resume.

Official record
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Trial summary

The purpose of this research study is to test if Topical (applied to the surface of the eye) Botulinum Toxin temporarily lowers the upper eyelid and makes the eyelid appear less open and thereby affects the eye surface and decreases reflexive tearing. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Tears; Excess, Eyelid Spasm
What is being tested?
Botulinum toxin
Could I receive a placebo?
No, everyone receives an active treatment
How many people
2 participants
Where
1 siteUnited States
Study dates
29 Nov 2022to 28 Jul 2024
Phase
Phase 4
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Adults aged 18 and above that present to the oculoplastic and reconstructive surgery department that are able to provide informed consent to participate
  • Presence of upper eyelid retraction or asymmetry( >1mm)

Who cannot join

  • Adults unable to consent
  • Individuals less than 18 years of age
  • Prisoners
  • Pregnant women. o Patients will be asked if they are pregnant by research staff before participation in the study.
  • Women who are breast-feeding
  • Known contradictions or sensitivities to study medication
Show all 16Show fewer
  • Grossly abnormal lid margins, anatomical abnormalities
  • Variable ptosis or eyelid position (e.g., myasthenia gravis, blepharospasm)
  • Any ocular or systemic condition that, in the opinion of the investigator, would confound study data, interfere with the subject's study participation, or affected the subject's safety or trial parameters
  • Presence of an active ocular infection
  • Inability to sit comfortably for 15 - 30 minutes
  • Botulinum toxin injection in the eyelids during the past 3 weeks.
  • Neuromuscular disorders (e.g., Parkinson's disease or myasthenia gravis)
  • Medication use known to interfere with the effects of botulinum toxin-A within the previous 1 month (e.g., aminoglycoside or benzodiazepines),
  • Previous history of hypersensitivity reactions to botulinum toxin-A
  • Dysfunction of tear production or secretion (e.g., meibomian gland dysfunction or Sjogren's syndrome),

Trial locations and contacts

1 site in 1 country.

United States1 site
  • University of Miami

    Miami, Florida, 33135

Other trials in United States

About this study

Official title: The Effect of Topical Botulinum Toxin Eyedrop on Palpebral Fissure Height, Ocular Surface and Tearing

The purpose of this research study is to test if Topical (applied to the surface of the eye) Botulinum Toxin temporarily lowers the upper eyelid and makes the eyelid appear less open and thereby affects the eye surface and decreases reflexive tearing.

Being tested
Botulinum toxin
Medical subject headings
Lacerations, Blepharospasm

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Botulinum toxinDrug

    Also called BOTOX

    15 units of botulinum toxin administered one time to the eye via eye drops

Study groups in NCT06080438
Study groupRoleWhat they receive
Botulinum toxin groupExperimentalThe left eye of each participant will receive botulinum toxin eye drops and will remain in this group for up to 40 minutes.
Receives: Drug: Botulinum toxin

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Change in Palpebral Fissure Height

    Palpebral fissure on Day 3 minus palpebral fissure at baseline.

    Palpebral fissure is the area between the upper and lower eyelid margins. Palpebral fissure height on eyes is measured in primary gaze position with a clear ruler held in a central vertical position between the upper and lower eyelid margin.

    Measured: baseline and Day 3

Secondary outcomes (3)
  1. Corneal Staining Density

    Scoring of the ocular surface will be done by fluorescein staining and evaluating with a slit lamp and grading scale: 0-3 0 (no punctate staining)

    1. (sparse density)
    2. (moderate density)
    3. (high density and overlapping lesions).

    Measured: Baseline

  2. Corneal Staining Density

    Scoring of the ocular surface will be done by fluorescein staining and evaluating with a slit lamp and grading scale: 0-3 0 (no punctate staining)

    1. (sparse density)
    2. (moderate density)
    3. (high density and overlapping lesions).

    Measured: Day 3

  3. Change in Tearing

    Change in tearing will be calculated as tearing on Day 3 minus tearing at baseline.

    Tearing will be assessed using the Schirmer test with anesthesia. Schirmer strip is inserted into the lower conjunctival sac at the junction of the lateral and middle thirds, avoiding touching the cornea, and the length of wetting strips in millimeters is recorded after 5 minutes.

    The result can range from a minimum of 0 mm (no tearing) to a maximum of 35 mm (maximum tearing).

    Measured: baseline and Day 3

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted12 Oct 2023
  2. Study start29 Nov 2022
  3. Primary completion28 Jul 2024
  4. Study completion28 Jul 2024

Why it stopped: Patient recruitment shortage and study coordinator turnover

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 4
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrolment
2 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06080438
Sponsor's protocol ID
20220083
Status last verified
Nov 2024
First submitted
5 Oct 2023
Last updated
5 Dec 2024
Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A Phase 4 study testing Botulinum toxin in people with Tears; Excess and Eyelid Spasm, run by University of Miami at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 2 inclusion and 16 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: stopped early, as of the sponsor's last update on 5 Dec 2024. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 4 studies take place after a treatment is approved, to learn more about its long-term benefits and risks in everyday use.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 5 Dec 2024). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Change in Palpebral Fissure Height (time frame: baseline and Day 3). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 5 Dec 2024.

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