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CompletedNCT07623434Updated Jun 3, 2026

Comparison of Safety and Efficacy of Hydrus and iStent Combined With Phacoemulsyfication in Open Angle Glaucoma Patients Long-Term Follow-Up

An interventional study of Hydrus combined with the phacoemulsification cataract procedure and iStent with the phacoemulsification cataract procedure in Glaucoma, sponsored by Military Institute od Medicine National Research Institute. Completed at 1 site in Poland. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-06-03.

Sponsored by Military Institute od Medicine National Research Institute · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Registered 11 years 4 months after the study started (first participant enrolled Jan 2015, registered May 2026).
Phase
Not applicable
Study type
Interventional
Enrollment
65
Allocation
Non-randomized
Ages
18 Years and older
Sex
All
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Study summary

Comparison of Safety and Efficacy of Hydrus and iStent combined with Phacoemulsyfication in Open Angle Glaucoma Patients a Long-Term Follow-Up

Read the detailed description

Purpose of the study is to compare the effectiveness and safety of two micro-invasive glaucoma surgery devices: Hydrus Microstent and iStent Trabecular Bypass in combination with cataract phacoemulsification in the treatment of open-angle glaucoma. We additionally analyze the impact of preoperative factors on achieving surgical success in both surgical methods.

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Conditions studied

  • Glaucoma

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Keywords

  • Glaucoma
  • iStent
  • Hydrus
  • microinvasive glaucoma surgery
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In context

Glaucoma

1,818 studies on the registry are indexed under Glaucoma; 231 are open to participants now.

This study's enrollment of 65 is close to the median of 65 across 1,272 interventional studies indexed under Glaucoma.

Browse Glaucoma studies →

Lead sponsor

Military Institute od Medicine National Research Institute is the lead sponsor of 45 studies on the registry; 6 are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

the cataract which had a significant effect on the visual acuity of the patients and one of the following conditions: progression of glaucoma in visual field confirmed by two consecutive examinations by the Humphrey visual field analyzer with SITA Standard 24-2 algorithm in the course of primary open-angle glaucoma despite the use of IOP-lowering medications (1 to 4 active ingredients) or patients not tolerating or adhering to the treatment.

Exclusion criteria

Exclusion Criteria:

lack of consent for study participation, narrow-angle or closed-angle glaucoma, secondary glaucoma (including the course of psudoexfoliation syndrome, pigmentary glaucoma), advanced glaucoma, severe proliferative diabetic retinopathy, cloudy cornea, advanced macular degeneration, history of glaucoma surgical interventions (as well as trabeculoplasty), and use of more than four IOP-lowering medications

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Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
65 participants (actual)

Study arms

  • Active comparator
    iStent

    35 patients had surgical treatment with the 1st generation iStent implant combined with the phacoemulsification cataract procedure

    Device: iStent with the phacoemulsification cataract procedure

  • Active comparator
    Hydrus

    30 patients underwent surgery with the Hydrus implant combined with the phacoemulsification cataract procedure

    Device: Hydrus combined with the phacoemulsification cataract procedure

Interventions

  • DeviceHydrus combined with the phacoemulsification cataract procedure

    Cataract phacoemulsification with implantation of an artificial posterior chamber lens insertion into the capsular bag was first performed and subsequently the implantation of the Hydrus microscent was undertaken using a direct gonioscope lens. The injector ended with a cannula with a Hydrus microimplant was introduced through the same temporal incision that was used during the cataract stage.

  • DeviceiStent with the phacoemulsification cataract procedure

    Cataract phacoemulsification with implantation of an artificial posterior chamber lens insertion into the capsular bag was first performed and subsequently the implantation of the iStent implantation a 23 gauge applicator was used. iStent was gently advanced through the tra-becular meshwork and placed in the Schelmm's Canal in the inferior nasal position (3:00 to 4:00 hours in the right eye, 8:00 to 9:00 hours in the left eye).

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What researchers measure

Primary outcomes

  1. IOP

    Intraocular Pressure

    Time frame: 10 years

  2. BCVA

    The change of best- corrected visual acuity

    Time frame: 10 years

  3. Medications

    Median number of patients who took medications before surgery and up until the end of the study

    Time frame: 10 years

Secondary outcomes

  1. CCT

    Central corneal thickness

    Time frame: 10 years

  2. Visual Field

    Visual Field of the mean defect

    Time frame: 10 years

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Study locations

1 site
  • Military Institute of Medicine - National Research Institute
    Warsaw, Mazovian 04-141, Poland
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References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jun 3, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT07623434
Lead sponsor
Military Institute od Medicine National Research Institute
Responsible party
Sponsor
First posted
Jun 3, 2026
Start date
Jan 1, 2015
Primary completion
May 22, 2026
Completion
May 22, 2026
Last update
Jun 3, 2026

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Jan 2015. You cannot join it, but the record below documents what was studied.

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