Evaluation of Hydrus Microstent after cataract surgery for glaucoma

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

Not applicable Interventional Alcon Research · NCT04553523

This study is testing how well the Hydrus Microstent works for people with glaucoma after they have cataract surgery to see if it stays in place and improves their eye health over two years.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment545 (estimated)
Ages45 Years and up
SexAll
SponsorAlcon Research Industry-sponsored
Locations22 sites (Irvine, California and 21 other locations)
Trial IDNCT04553523 on ClinicalTrials.gov

What this trial studies

This post-approval study aims to assess the rate of malposition and clinical outcomes associated with the Hydrus Microstent within 24 months following its implantation. Participants will undergo uncomplicated cataract surgery with a monofocal intraocular lens, followed by the placement of the Hydrus Microstent. The study includes a series of scheduled postoperative visits to monitor the subjects' progress and any complications. The research is sponsored by Alcon Research, following their acquisition of Ivantis, Inc.

Who should consider this trial

Good fit: Ideal candidates are individuals with operable cataracts and primary open angle glaucoma who are currently using no more than four topical hypotensive medications.

Not a fit: Patients with closed angle glaucoma, congenital glaucoma, or those who have undergone previous glaucoma surgeries may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could improve the management of primary open angle glaucoma by providing insights into the safety and effectiveness of the Hydrus Microstent.

How similar studies have performed: Other studies involving microstent implantation for glaucoma have shown promising results, indicating potential for success in this approach.

Eligibility criteria

Show full inclusion / exclusion criteria
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.

Where this trial is running

Irvine, California and 21 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Primary Open Angle Glaucoma
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.