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Comparing Effectiveness of the Hydrus Microstent (TM) to Two iStents to Lower IOP in Phakic Eyes (COMPARE)

This study is ongoing, but not recruiting participants.
Information provided by (Responsible Party):
Ivantis, Inc. Identifier:
First received: December 23, 2013
Last updated: May 9, 2017
Last verified: May 2017
This clinical trial compares two implantable devices intended to lower the pressure inside the eye of glaucoma patients.

Condition Intervention
Primary Open Angle Glaucoma Pseudoexfoliative Glaucoma Pigmentary Glaucoma Device: Hydrus Microstent Device: iStent Trabecular Micro Bypass

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single (Participant)
Primary Purpose: Treatment
Official Title: A Prospective, Multicenter, Randomized Comparison of the Hydrus to the iStent® for Lowering Intraocular Pressure in Primary Open Angle Glaucoma

Resource links provided by NLM:

Further study details as provided by Ivantis, Inc.:

Primary Outcome Measures:
  • Response rate at Month 12 [ Time Frame: Twelve months ]
    The primary effectiveness endpoint for this study is difference in proportion of subjects unmedicated at 12 months following surgery.

Secondary Outcome Measures:
  • Medication use at 12 and 24 months [ Time Frame: Months 12 and 24 ]
    Mean medication use at 12 and 24 months post procedure

Other Outcome Measures:
  • Safety outcomes [ Time Frame: Months 12 and 24 ]
    Safety outcomes include complications and adverse events.

Enrollment: 152
Study Start Date: October 2012
Estimated Study Completion Date: January 2018
Primary Completion Date: May 2015 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Hydrus Microstent
Patients randomized to the Hydrus Microstent .
Device: Hydrus Microstent
Device inserted into Schlemm's canal to enhance aqueous flow from the anterior chamber.
Active Comparator: iStent Trabecular Micro Bypass
Patients randomized to the iStent Trabecular Micro Bypass
Device: iStent Trabecular Micro Bypass
Device inserted into Schlemm's canal to enhance aqueous flow from the anterior chamber.

Detailed Description:
This is a prospective, multicenter, single-masked, randomized clinical trial comparing the Hydrus Microstent to two iStent implants for the reduction of intraocular pressure in phakic patients with a positive diagnosis of primary open angle glaucoma, pseudoexfoliative glaucoma, or pigmentary dispersion glaucoma. Post-operative follow-up visits will be conducted at regular intervals.

Ages Eligible for Study:   45 Years to 84 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • A diagnosis of primary open angle glaucoma (POAG), Pseudoexfoliative (PXG) glaucoma, or Pigmentary glaucoma (PG)
  • A phakic lens with BCVA of 20/30 or better

Exclusion Criteria:

  • Forms of primary or secondary glaucoma not listed above
  • Prior glaucoma surgery in the study eye
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT02023242

United States, California
Contact Paul Rhee at Ivantis
Irvine, California, United States, 92618
Sponsors and Collaborators
Ivantis, Inc.
Principal Investigator: Julian Garcia Feijoo, Prof. Med. Madrid, Spain
  More Information

Responsible Party: Ivantis, Inc. Identifier: NCT02023242     History of Changes
Other Study ID Numbers: CP-12-001
Study First Received: December 23, 2013
Last Updated: May 9, 2017

Keywords provided by Ivantis, Inc.:
Primary open angle glaucoma
Pseudoexfoliative glaucoma
Pigmentary glaucoma

Additional relevant MeSH terms:
Glaucoma, Open-Angle
Ocular Hypertension
Eye Diseases processed this record on September 21, 2017