NCT07531043

Brief Summary

The purpose of this study is to evaluate the efficacy and safety of an investigational ophthalmic solution in adults with ocular redness due to minor eye irritations.

Trial Health

63
Monitor

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
240

participants targeted

Target at P50-P75 for phase_3

Timeline
4mo left

Started Oct 2026

Shorter than P25 for phase_3

Geographic Reach
1 country

1 active site

Status
not yet recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

April 9, 2026

Completed
6 days until next milestone

First Posted

Study publicly available on registry

April 15, 2026

Completed
6 months until next milestone

Study Start

First participant enrolled

October 1, 2026

Expected
4 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

February 1, 2027

Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

February 1, 2027

Last Updated

May 4, 2026

Status Verified

May 1, 2026

Enrollment Period

4 months

First QC Date

April 9, 2026

Last Update Submit

May 1, 2026

Conditions

Keywords

Ocular Redness

Outcome Measures

Primary Outcomes (2)

  • Mean change from baseline (pretreatment) in investigator-assessed ocular redness at 15 minutes post-instillation on Day 1

    Ocular redness will be assessed by the investigator and recorded per the Ora Calibra® Ocular Hyperemia Scale, which ranges 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). Change from baseline, calculated as post-instillation minus baseline score, 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 pretreatment); 15 minutes post-instillation (Day 1)

  • Mean change from baseline (pretreatment) in investigator-assessed ocular redness at 840 minutes (14 hours) post-instillation on Day 2

    Ocular redness will be assessed by the investigator and recorded per the Ora Calibra® Ocular Hyperemia Scale, which ranges 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). Change from baseline, calculated as post-instillation minus baseline score, 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 pretreatment); 840 minutes (14 hours) post-instillation (Day 2)

Secondary Outcomes (2)

  • Mean change from baseline (pretreatment) in investigator-assessed ocular redness at 1 minute post-instillation on Day 1

    Baseline (Day 1 pretreatment); 1 minute post-instillation (Day 1)

  • Mean change from baseline (pretreatment) in investigator-assessed ocular redness at 960 minutes (16 hours) post-instillation on Day 2

    Baseline (Day 1 pretreatment); 960 minutes (16 hours) post-instillation (Day 2)

Study Arms (2)

Apraclonidine Ophthalmic Solution, 0.125% Unit Dose Preservative Free

EXPERIMENTAL

One drop in each eye on Day 1 (single dose)

Drug: Apraclonidine Ophthalmic Solution, 0.125% Unit Dose Preservative Free

Vehicle

PLACEBO COMPARATOR

One drop in each eye on Day 1 (single dose)

Drug: Vehicle

Interventions

Inactive ingredients of FID 123472 applied topically to the eye as an ophthalmic solution in a unit dose preservative free (UDPF) formulation

Vehicle

Investigational ophthalmic solution applied topically to the eye in a unit dose preservative free (UDPF) formulation

Also known as: FID 123472, Apraclonidine 0.125% UDPF
Apraclonidine Ophthalmic Solution, 0.125% Unit Dose Preservative Free

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Capable of giving signed informed consent and complying with the requirements listed in the Informed Consent Form.
  • Willing and able to follow all instructions and attend all study visits.
  • History of redness relief eyedrop use within the last 6 months, or has an interest in using redness relief drops, or would benefit from the use of redness relief drops in the investigator's opinion.
  • Best corrected visual acuity at distance of 0.3 logarithm Minimum Angle of Resolution or better in each eye.
  • Baseline ocular redness score greater than 1 unit in both eyes using the 0-4 Ora Calibra® Ocular Hyperemia Scale.
  • Stable ocular health.

You may not qualify if:

  • Known contraindications or sensitivity to the use of any of the study treatment(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.
  • Use of prohibited medications, devices, or treatments as specified in the protocol;
  • Ocular or systemic conditions or situations which, in the investigator's opinion, may put the subject at increased risk, confound study data, or interfere significantly with the subject's study participation.
  • Currently pregnant or breastfeeding; planning a pregnancy or planning to breastfeed during the study; has a positive urine pregnancy test during screening at Visit 1 or Visit 2.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Contact Alcon Call Center for Trial Locations

Fort Worth, Texas, 76134, United States

Location

Related Links

MeSH Terms

Interventions

apraclonidine

Study Officials

  • Clinical Trial Lead, Pharma

    Alcon Research, LLC

    STUDY DIRECTOR

Central Study Contacts

Study Design

Study Type
interventional
Phase
phase 3
Allocation
RANDOMIZED
Masking
DOUBLE
Who Masked
PARTICIPANT, INVESTIGATOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
INDUSTRY
Responsible Party
SPONSOR

Study Record Dates

First Submitted

April 9, 2026

First Posted

April 15, 2026

Study Start (Estimated)

October 1, 2026

Primary Completion (Estimated)

February 1, 2027

Study Completion (Estimated)

February 1, 2027

Last Updated

May 4, 2026

Record last verified: 2026-05

Data Sharing

IPD Sharing
Will not share

Locations