Hydrus® Microstent New Enrollment Post-Approval Study (CONFIRM)

September 21, 2026 updated by: Alcon Research

The Hydrus® Microstent New Enrollment Post-Approval Study: A Prospective, Non-Randomized, Multicenter, Single Arm, Clinical Trial

The purpose of this post-approval study is to evaluate the rate of Hydrus Microstent malposition and associated clinical sequelae occurring within 24 months post-operation. Qualified subjects will undergo uncomplicated cataract surgery with placement of a monofocal intraocular lens (IOL), followed by implantation of the Hydrus Microstent.

Study Overview

Status

Status

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

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

Qualified subjects will attend a screening visit, a surgical visit (Day 0), and 8 scheduled postoperative visits at Day 1, Day 7, Month 1, Month 3, Month 6, Month 12, Month 18, and Month 24.

This study was initiated by Ivantis, Inc. Ivantis was acquired by Alcon Research, and Alcon assumed sponsorship of the study in November 2022.

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 (Estimated)

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.
545

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.
  • Not Applicable

Contacts and Locations

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

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • United States
    • California
      • Irvine, California, United States, 92618
        • Completed
        • Coastal Vision
      • Sacramento, California, United States, 95815
        • Recruiting
        • Sacramento Eye Consultants
    • Colorado
      • Loveland, Colorado, United States, 80538
        • Recruiting
        • Eye Center of Northern Colorado
    • Iowa
      • Sioux City, Iowa, United States, 51104
        • Recruiting
        • Jones Eye Center PC
    • Kansas
      • Overland Park, Kansas, United States, 66213
        • Not yet recruiting
        • Stiles Eyecare Excellence Cataracts and Glaucoma
    • Maryland
      • Rockville, Maryland, United States, 20852
        • Not yet recruiting
        • Visionary Eye Doctors
    • Michigan
      • Fraser, Michigan, United States, 48026
        • Recruiting
        • Fraser Eye Care Center
    • Minnesota
      • Coon Rapids, Minnesota, United States, 55433
        • Recruiting
        • Twin Cities Eye Consultants
    • Missouri
      • Chesterfield, Missouri, United States, 63017
        • Recruiting
        • Midwest Vision Research Foundation
      • Kansas City, Missouri, United States, 64154
        • Not yet recruiting
        • Moyes Eye Center
    • Nevada
      • Las Vegas, Nevada, United States, 89145
        • Recruiting
        • Center for Sight
    • North Carolina
      • Southern Pines, North Carolina, United States, 28387
        • Recruiting
        • Carolina Eye Associates PA
    • Ohio
      • Brecksville, Ohio, United States, 44141
        • Completed
        • Cleveland Eye Clinic
      • Cincinnati, Ohio, United States, 45242
        • Recruiting
        • Cincinnati Eye Institute
      • Mason, Ohio, United States, 45040
        • Not yet recruiting
        • Cincinnati Eye / Apex Eye
    • Pennsylvania
      • Cranberry Township, Pennsylvania, United States, 16066
        • Not yet recruiting
        • Scott & Christie and Associates, PC
    • Texas
      • Austin, Texas, United States, 78731
        • Recruiting
        • Texan Eye / Keystone Research
      • Dallas, Texas, United States, 75231
        • Not yet recruiting
        • Glaucoma Associates Of Texas
      • El Paso, Texas, United States, 79902
        • Recruiting
        • El Paso Eye Surgeons
      • Hurst, Texas, United States, 76054
        • Recruiting
        • Texas Eye Research Center
    • Utah
      • Salt Lake City, Utah, United States, 84107
        • Not yet recruiting
        • The Eye Institute of Utah
    • Wisconsin
      • Kenosha, Wisconsin, United States, 53142
        • Recruiting
        • Eye Centers Of Racine And Kenosha

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

45 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • An operable, age-related cataract with best corrected visual acuity (BCVA) of 20/40 or worse;
  • Diagnosis of primary open angle glaucoma treated with no more than 4 topical hypotensive medications;
  • Optic nerve appearance characteristic of glaucoma;
  • Medicated IOP less than or equal to 31 millimeters mercury (mmHg); Other protocol-defined inclusion criteria may apply.

Exclusion Criteria:

  • Closed angle forms of glaucoma;
  • Congenital or developmental glaucoma;
  • Secondary glaucoma;
  • Use of more than 4 ocular hypotensive medications;
  • Previous argon laser trabeculoplasty, trabeculectomy, tube shunts, or any other prior filtration or cilioablative surgery;
  • Prior surgery with implanted device or other surgery involving the trabecular meshwork or Schlemm's canal;
  • 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: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

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: Hydrus Microstent

Hydrus Microstent implanted in the eye immediately following cataract surgery and placement of a monofocal intraocular lens (IOL)
Device: Hydrus Microstent

Crescent-shaped nitinol device intended as a permanent implant to provide an outflow pathway for aqueous humor. The device is placed through the trabecular meshwork into Schlemm's canal immediately following placement of a monofocal IOL.

Procedure: Cataract surgery

Cataract surgery performed using standard anesthesia and phacoemulsification techniques

Device: Monofocal IOL

Commercially available monofocal intraocular lens as determined by the investigator

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
Rate of occurrence of clinically significant device malposition associated with clinical sequelae
Time Frame: Day 0 operative, up to Month 24 postoperative

The position of the implant will be assessed visually intraoperatively and at each postoperative follow-up visit. Examples of clinically significant device malposition associated with clinical sequelae as listed in the protocol include secondary surgical intervention to modify device position or to remove the device (explantation), corneal endothelial touch by device, iris touch by the device associated with intraocular inflammation, pigment dispersion or other sequelae, central endothelial cell loss ≥30 percent, compromised corneal function, best-corrected visual acuity (BCVA) loss of 2 lines (10 letters) or more on the ETDRS chart, device obstruction requiring secondary surgical intervention, persistent anterior chamber inflammation with peripheral anterior synechiae, persistent anterior chamber inflammation without peripheral anterior synechiae, and chronic pain.
Day 0 operative, up to Month 24 postoperative

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
Rate of occurrence of intraoperative ocular adverse events
Time Frame: Day 0 operative

Intraoperative ocular adverse events as specified in the protocol include hyphema obscuring the surgeon's view, choroidal hemorrhage or effusion, choroidal detachment, significant iris injury or trauma, corneal abrasion, corneal edema, zonular dialysis, cyclodialysis, cyclodialysis cleft, iridodialysis, vitreous loss not associated with the cataract procedure, inadvertent perforation of the sclera, and Descemet's membrane detachment.
Day 0 operative
Rate of occurrence of sight threatening postoperative adverse events
Time Frame: Up to Month 24

Sight threatening, post-operative adverse events as specified in the protocol include endophthalmitis, corneal decompensation, severe retinal detachment, severe choroidal hemorrhage, severe choroidal detachment, and aqueous misdirection.
Up to Month 24
Rate of occurrence of other postoperative ocular adverse events
Time Frame: Up to Month 24

Other postoperative ocular adverse events as specified in the protocol include anterior uveitis/iritis, non-persistent & persistent, best corrected visual acuity (BCVA) loss of 2 lines or more, chronic pain, device migration, device obstruction, peripheral anterior synechiae (PAS), ocular secondary surgical interventions for intraocular pressure (IOP) or glaucoma management, hypotony at or after 1 month postop, hyphema, corneal opacification, corneal edema persisting or severe corneal edema, other retinal complications, elevated mean IOP >/=10 millimeters mercury (mmHg) vs screening, iris prolapse/wound incarceration, significant foreign body sensation at or after 3 months postop, surgical re-intervention, and worsening of visual field.
Up to Month 24

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: Clinical Project Lead, CDMA Surgical, Alcon Research

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 25, 2020

Primary Completion (Estimated)

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.
October 1, 2028

Study Completion (Estimated)

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.
October 1, 2028

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).
September 11, 2020

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.
September 11, 2020

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.
September 17, 2020

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.
September 22, 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.
September 21, 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.
July 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

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.
  • CP 18-001
  • GLI314-C003 (Other Identifier: Alcon Research)

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

No

Studies a U.S. FDA-regulated device product

Yes

product manufactured in and exported from the U.S.

Yes

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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