A Double-Masked Comparison of FID 123320 Ophthalmic Solution to Vehicle for the Reduction of Ocular Redness

October 16, 2026 updated by: Alcon Research

A Double-Masked Comparison of Apraclonidine Hydrochloride Ophthalmic Solution to Vehicle for the Reduction of Ocular Redness

The purpose of this study is to assess the safety and efficacy of Apraclonidine Hydrochloride Ophthalmic Solution 0.125% when compared to Vehicle in relieving redness of the eye due to minor eye irritations. This study will be conducted in the United States.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

The study will consist of six (6) scheduled visits: Screening and/or Baseline Visit (Day -7 to -1), Eligibility Confirmation/Randomization/1st Treatment Visit (Day 1), Week 2 Follow-Up Visit (Day 14), Week 4 Follow-Up Visit (Day 28), Week 8 Follow-Up/Treatment Discontinuation Visit (Day 56) and Exit Visit (Day 63). The expected individual duration of participation in the study is approximately 10 weeks with approximately 56 days of exposure to the investigational product.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
159

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 3

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • California
      • Glendale, California, United States, 91204
        • Global Research Management
    • North Carolina
      • Garner, North Carolina, United States, 27529
        • Oculus Research, Inc.
    • Pennsylvania
      • Cranberry Township, Pennsylvania, United States, 16066
        • Scott & Christie and Associates, PC
    • Virginia
      • Falls Church, Virginia, United States, 22046
        • Emerson Clinical Research Institute, Inc.
      • Lynchburg, Virginia, United States, 24502
        • Piedmont Eye Center

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Key Inclusion Criteria:

  • Capable of giving signed informed consent;
  • Willing and able to follow all instructions and attend all study visits;
  • Able to self-administer eye drops- in the opinion of the investigator;
  • History of redness relief drop use within the last 6 months, or a desire to use over-the-counter (OTC) eye drops for redness relief;
  • Females capable of becoming pregnant: Agree to urine pregnancy tests and the use of medically acceptable forms of birth control throughout the study;
  • Ocular health within normal limits, including best-corrected visual acuity (BCVA) of 20/40 or better in each eye as measured using a Snellen chart;
  • Ocular redness at baseline as specified in the protocol;
  • Other protocol-specified inclusion criteria may apply.

Key Exclusion Criteria:

  • Known contraindications or sensitivities to the use of any of the investigational drug(s) or their components, or any other medication required by the protocol;
  • Ocular surgical interventions within 6 months prior to Visit 1 or during the study;
  • Ocular conditions that, in the opinion of the investigator, could affect the subject's safety or study parameters (i.e., could affect ocular redness, intraocular pressure, or eyelid position);
  • Disallowed medications or devices as specified in the protocol;
  • Planned surgery (ocular or systemic) during the study period or within 30 days after the study period;
  • Other protocol-defined exclusion criteria may apply.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Double

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Apraclonidine HCl 0.125%

1 drop instilled in each eye at Visit 2 (Day 1), followed by one drop instilled in each eye twice a day (approximately 12 hours apart) Day 2 up to Visit 5 (Day 56), followed by 1 drop instilled in each eye at Visit 5 (Day 56).
Drug: Apraclonidine Hydrochloride Ophthalmic Solution

Investigational ophthalmic solution applied topically to the eye with a dropper bottle

Other Names:
  • Apraclonidine HCl 0.125%
Placebo Comparator: Vehicle

1 drop instilled in each eye at Visit 2 (Day 1), followed by one drop instilled in each eye twice a day (approximately 12 hours apart) Day 2 up to Visit 5 (Day 56), followed by 1 drop instilled in each eye at Visit 5 (Day 56).
Drug: Vehicle

Vehicle (inactive ingredients) applied topically to the eye with a dropper bottle

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Least Squares Mean Change From Baseline in Investigator-Assessed Ocular Redness at 15 Minutes Post-instillation on Day 1
Time Frame: Baseline (Day 1 pre-instillation); Minute 15 (Day 1 post-instillation)

Ocular redness was assessed by the investigator using the Ora Calibra® Ocular Hyperemia Scale, which ranged from 0 to 4 in half-point increments (0.0 = none; 1.0 = mild redness; 2.0 = moderate redness; 3.0 = severe redness; and 4.0 = extremely severe redness). The change from baseline, calculated as post-instillation minus baseline scores, can range between -4 and +2.5. Positive values indicate increased ocular redness (worsening), zero indicates no change, and negative values indicate improvement (decrease in severity). This is a co-primary endpoint.
Baseline (Day 1 pre-instillation); Minute 15 (Day 1 post-instillation)
Least Squares Mean Change From Baseline in Investigator-assessed Ocular Redness at 10 Hours (600 Minutes) Post-instillation on Day 1
Time Frame: Baseline (Day 1 pre-instillation); Hour 10 (600 minutes) (Day 1 post-instillation)

Ocular redness was assessed by the investigator using the Ora Calibra® Ocular Hyperemia Scale, which ranged from 0 to 4 in half-point increments (0.0 = none; 1.0 = mild redness; 2.0 = moderate redness; 3.0 = severe redness; and 4.0 = extremely severe redness). The change from baseline, calculated as post-instillation minus baseline scores, can range between -4 and +2.5. Positive values indicate increased ocular redness (worsening), zero indicates no change, and negative values indicate improvement (decrease in severity). This is a co-primary endpoint.
Baseline (Day 1 pre-instillation); Hour 10 (600 minutes) (Day 1 post-instillation)

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Least Squares Mean Change From Baseline in Investigator-assessed Ocular Redness at 1 Minute Post-instillation on Day 1
Time Frame: Baseline (Day 1 pre-instillation); Minute 1 (Day 1 post-instillation)

Ocular redness was assessed by the investigator using the Ora Calibra® Ocular Hyperemia Scale, which ranged from 0 to 4 in half-point increments (0.0 = none; 1.0 = mild redness; 2.0 = moderate redness; 3.0 = severe redness; and 4.0 = extremely severe redness). The change from baseline, calculated as post-instillation minus baseline scores, can range between -4 and +2.5. Positive values indicate increased ocular redness (worsening), zero indicates no change, and negative values indicate improvement (decrease in severity).
Baseline (Day 1 pre-instillation); Minute 1 (Day 1 post-instillation)
Least Squares Mean Change From Baseline in Investigator-assessed Ocular Redness at 8 Hours (480 Minutes) Post-instillation on Day 1
Time Frame: Baseline (Day 1 pre-instillation); Hour 8 (480 minutes) (Day 1 post-instillation)

Ocular redness was assessed by the investigator using the Ora Calibra® Ocular Hyperemia Scale, which ranged from 0 to 4 in half-point increments (0.0 = none; 1.0 = mild redness; 2.0 = moderate redness; 3.0 = severe redness; and 4.0 = extremely severe redness). The change from baseline, calculated as post-instillation minus baseline scores, can range between -4 and +2.5. Positive values indicate increased ocular redness (worsening), zero indicates no change, and negative values indicate improvement (decrease in severity).
Baseline (Day 1 pre-instillation); Hour 8 (480 minutes) (Day 1 post-instillation)
Least Squares Mean Change From Baseline in Investigator-Assessed Ocular Redness at 12 Hours (720 Minutes) Post-instillation on Day 1
Time Frame: Baseline (Day 1 pre-instillation); Hour 12 (720 minutes) (Day 1 post-instillation)

Ocular redness was assessed by the investigator using the Ora Calibra® Ocular Hyperemia Scale, which ranged from 0 to 4 in half-point increments (0.0 = none; 1.0 = mild redness; 2.0 = moderate redness; 3.0 = severe redness; and 4.0 = extremely severe redness). The change from baseline, calculated as post-instillation minus baseline scores, can range between -4 and +2.5. Positive values indicate increased ocular redness (worsening), zero indicates no change, and negative values indicate improvement (decrease in severity).
Baseline (Day 1 pre-instillation); Hour 12 (720 minutes) (Day 1 post-instillation)

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Alcon Research

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Study Director: Principal Clinical Trial Lead, Pharma, Alcon Research, LLC

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Helpful Links

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
August 21, 2024

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
November 14, 2024

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
January 8, 2025

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
May 31, 2024

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
May 31, 2024

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
June 5, 2024

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
November 10, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
October 16, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
October 1, 2026

More Information

Terms related to this study

Keywords

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • DEW422-C001

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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