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NCT Number: NCT07279506

Clinical Investigation of IXIUM TWIN Viscoelastic Ophthalmic Device For Cataract Surgery

This clinical trial is testing a new surgical gel called IXIUM TWIN, designed to protect the eye during cataract surgery. Cataracts, which cloud the eye's natural lens, are the leading cause of vision loss worldwide. Surgery to remove the cataract and replace it with an artificial lens is the standard treatment, and viscoelastic gels like IXIUM TWIN are used to keep the eye stable and safe during the procedure.

The goal of this study is to compare IXIUM TWIN with an already approved gel (HEALON) to ensure it works just as well (or better) in protecting the delicate cells inside the eye. Specifically, researchers will measure whether IXIUM TWIN causes less damage to the eye's inner lining (endothelial cells) after surgery.

Who can take part? Adults aged 18 and older who have cataracts and are scheduled for surgery may qualify. Only one eye per participant will be included. Patients must be able to attend follow-up visits and provide informed consent.

What does participation involve? Before surgery, participants will have eye exams to check vision, cell health, corneal thickness, and eye pressure. During surgery, they will randomly receive either IXIUM TWIN or HEALON (neither the patient nor the surgeon will choose). After surgery, follow-up visits at 1 day, 7 days, 30 days, and 90 days will monitor healing, vision improvement, and any side effects.

Potential risks and benefits As with any cataract surgery, there are minor risks, such as temporary increased eye pressure, inflammation, or swelling, but these are rare and usually resolve quickly. The benefits include improved vision after cataract removal. If successful, IXIUM TWIN could offer surgeons another high-quality option for protecting the eye during surgery.

Study timeline Patient enrollment begins in January 2025 and ends in June 2025, with follow-ups completing by September 2025. The full study is expected to conclude in early 2026.

This study is sponsored by LCA Pharmaceutical and will take place at four hospitals in France. Participation is voluntary, and patients can withdraw at any time.

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Key information

Conditions

Cataract Surgery

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Adult patients (≥18 years) with cataract (described and coded per WHO classification²⁷)
  • One eye per patient enrolled in the clinical investigation (IC)
  • Intraocular pressure (IOP) controlled or uncontrolled with treatment
  • Cataract extraction via phacoemulsification with implantation of a posterior chamber injectable intraocular lens (IOL) through a small incision
  • Signed informed consent from both patient and physician
  • Patient capable of understanding the IC procedures and geographically stable
  • Patient covered by or eligible for a social security/health insurance system

Exclusion criteria

  • Patient unable to participate in a clinical investigation (IC)
  • Pregnant women or those at risk of pregnancy during the study
  • Patient under legal guardianship (tutelle), conservatorship (curatelle), or judicial protection (sauvegarde de justice)
  • Patient currently enrolled in another clinical investigation at the time of inclusion

Treatment and study plan

IXIUM TWIN

Device

Use of IXIUM TWIN as the Ophthalmic Viscosurgical Devices in the cataract surgery

HEALON

Device

Use of HEALON as the Ophthalmic Viscosurgical Devices in the cataract surgery

Primary outcomes

  1. Percentage of Endothelial Cell Loss between pre- and post-operative periods

    Time frame: 90 days

    The primary outcome measure is the percentage of endothelial cell loss observed between the pre-operative and post-operative periods during cataract surgery using viscoelastic devices (OVDs).

    The study assumes that the percentage of endothelial cell loss after using IXIUM TWIN is not clinically worse than that seen with the comparator HEALON, with a non-inferiority margin set at -15%.

Secondary outcomes

  1. Proportion of patients with intraocular pressure (IOP) ≥30 mmHg

    Time frame: 90 days

    Proportion of patients with intraocular pressure (IOP) ≥30 mmHg at each visit.

  2. Slit-lamp biomicroscopy

    Time frame: 90 days

    Slit-lamp biomicroscopy at each visit:

    Multicriteria evaluation graded (1+ to 4+) per the Standardization of Uveitis Nomenclature (SUN) Working Group classification:

    • Corneal edema: Mild (grade 1+), moderate (grade 2+), severe (grade 3+)
    • Corneal opacity (% surface area): ≤25% (grade 1+), 26-50% (grade 2+), ≥51% (grade 3+)
    • Iritis syndrome: Iris involvement only (grade 1+), iridocyclitis (grade 2+), diffuse anterior chamber (AC) involvement (grade 3+)
    • Inflammatory cells in 1×1 mm field: 6-15 (grade 1+), 16-25 (grade 2+), 26-50 (grade 3+), >50 (grade 4+)
    • Anterior chamber flare: Mild (grade 1+), clear details (grade 2+), hazy details (grade 3+), intense with fibrin (grade 4+)

  3. Pachymetry

    Time frame: 90 days

    Measurement of corneal thickness

  4. Best-corrected visual acuity (BCVA) for distance and near vision

    Time frame: 90 days

    Best-corrected visual acuity (BCVA) for distance and near vision at Day 7, 30, and 90 (uncorrected at Day 1).

  5. Assessment of the viscoelastic device (DM) behavior

    Time frame: Post-op

    Assessment of the viscoelastic device (DM) behavior at each surgical step, distinguishing between the two phases: dispersive and cohesive (Likert scale).

  6. Patient satisfaction assessment regarding the procedure (Likert scale)

    Time frame: 90 days

    Patient satisfaction assessment regarding the procedure (Likert scale). Very satisfying - Satisfying - Acceptable - Insufficient

  7. Assessment of adverse events

    Time frame: 90 days

    Assessment of adverse events at all visits

Study contacts

Contact information is provided by the study sponsor or research team.

Patrice VINCENT

CONTACT

[email protected]

02 37 33 39 30

Sponsors and collaborators

Lead sponsor

LCA Pharmaceutical

Industry

Registry information

Official study title

Randomized Clinical Investigation Of The IXIUM TWIN Viscoelastic Ophthalmic Device (OVD) For Cataract Surgery With Intraocular Lens Implantation

Acronym: IXIUM_TWIN

Important dates

Study start
2026
Primary completion
2026
Study completion
2026
First posted
Dec 12, 2025
Registry last updated
Dec 12, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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