Efficacy and Safety of the ELIOS Laser in Combined Cataract and Glaucoma Surgery (ELIOS)

March 31, 2026 updated by: Hôpital Privé de la Baie
Glaucoma is an irreversible optic neuropathy. It is the second most common cause of blindness worldwide. Glaucoma can be treated with topical medications (eye drops), laser or surgery. Traditional surgery is invasive and has a high complication rate (hypotonia, endophthalmitis, cataracts, etc.). As a result, several types of micro-invasive surgery (MIGS) have been developed to reduce the risks of surgery while maintaining their effectiveness in lowering intraocular pressure (IOP). The ELIOS laser system is the only ophthalmological excimer laser designed for the surgical treatment of glaucoma. The aim of the procedure is to ablate the trabecular meshwork and inner wall of Schlemm´s canal ab interno, with the creation of 10 microchannels of 210 um in the trabeculum using the ELIOS laser with a wavelength of 308 nm, in order to improve trabecular outflow to achieve a reduction in IOP. The ELIOS laser is an example of Microinvasive Glaucoma surgery (MIGS) with published results demonstrating efficacy and safety. The ELIOS laser is already in use in France (AMM / CE mark achieved). Its use as part of a prospective interventional study will enable us to collect data in order to treat patients more effectively and improve the quality of care provided to glaucoma patients.

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.

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.
46

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

  • France
      • Avranches, France, 50300
        • Recruiting
        • Hôpital Privé de la Baie
        • Contact:
          • Ana Miguel, MD
          • Phone Number: +332 33 50 90 90

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

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Patients ≥ 18 years of age who agree to take part in the study and have signed an informed consent form
  • Visually significant cataract with indication for surgery
  • Primary open-angle glaucoma, or secondary open-angle glaucoma (pseudoexfoliative glaucoma or pigmentary glaucoma) with indication for cataract surgery.
  • Open iridocorneal angle (Shaffer classification grade 2-4)
  • Early to moderate glaucoma (advanced glaucoma, with MD from VFs worse than -12dB, will be excluded)

Exclusion Criteria:

  • Presence of severe systemic pathologies 2024-A01891-46_Protocol_V6_21112024_Elios Page 20 / 58
  • Pregnant or breastfeeding women
  • <18 years of age
  • Presence of other ophthalmological pathologies (except cataracts), and exclusion of severe dry eye.
  • History of intraocular surgery, trauma, or conjunctival scarring in the quadrant intended for surgery
  • Visual acuity worse than "counting fingers".
  • Closure of the iridocorneal angle (and angle-closure glaucoma), angle-closure glaucoma secondary to iridocorneal synechiae, neovascular glaucoma or neovascularization of the iris.
  • Normal-pressure glaucoma
  • Pachymetry < 490 um or > 620 μm
  • Glaucomatous visual field with mean deviation worse than ≤-12 dB
  • IOP > 35 mmHg
  • Autoimmune disorder, especially collagenosis
  • Patient under protective supervision
  • Patient not covered by a social security scheme

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: Elios
Device: Surgery with ELIOS laser
This surgery involves visualizing the iridocorneal angle before or after cataract surgery, inserting the ELIOS laser probe into the anterior chamber to come into slight contact with the trabecular meshwork, then pressing the foot pedal, the surgeon activates the laser, which creates a microchannel by photoablating the trabecular meshwork and inner wall of Schlemm´s canal (trabeculostomy) ± 210 um in diameter. This gesture is repeated until 10 microchannels are created. The creation of these microchannels enhances the natural outflow of aqueous humor by bypassing the site of major resistance in the system. The usual duration of the ELIOS procedure is typically few minutes). The rest of the surgery does not deviate from standard phacoemulsification.

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
Intraocular pressure (IOP)
Time Frame: day 0, 7 and 30, and month 3, 6 and 12 months after surgery
This IOP measurement will be carried out using the Goldmann gold standard tonometer, in 2 measurements taken between 8am and 12am, and measured in mmHg
day 0, 7 and 30, and month 3, 6 and 12 months after surgery

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
Quality of life
Time Frame: before and after surgery (1, 3, 6 and 12 months)
A quality of life questionnaire : 25 questions with Likert scales
before and after surgery (1, 3, 6 and 12 months)

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.
Hôpital Privé de la Baie

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.
January 5, 2025

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.
December 31, 2027

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.
February 28, 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).
December 30, 2024

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.
December 30, 2024

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.
January 6, 2025

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.
April 1, 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.
March 31, 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.
March 1, 2026

More Information

Terms related to this study

Keywords

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.
  • 2024-32-PDB

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

No

product manufactured in and exported from the U.S.

No

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.

Clinical Trials on Glaucoma

Clinical Trials on Surgery with ELIOS laser

Search Similar Trials

Sponsors and Collaborators

Medical Conditions

Drug Interventions

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

Sponsor/Collaborators

Locations

Cookie Settings

We use cookies to ensure that we give you the best experience on our website. For more details carefully read our Privacy and Cookies Policy. ...>>>You can change your preferences or withdraw your consent at any time by deleting the cookies from your website or computer as described in the policy. Please accept it and choose your preferences by ticking the corresponding boxes in the "Manage Settings" section below. Please carefully read our Terms of Service before you proceed with using any part of this website.
«Manage Settings