Bilateral Monofocal Versus Monofocal-EDOF IOL Implantation: Quality of Vision Comparison (COMEDI)

August 24, 2026 updated by: Karolien Termote, MD FEBOpht, Vrije Universiteit Brussel

Combining a Monofocal With an EDOF IOL: Is There an Improvement in Quality of Vision After Cataract Surgery Over Bilateral Monofocal IOL Implantation.

The goal of this clinical trial is to compare visual quality after cataract surgery between two groups: bilateral monofocal intraocular lenses (IOL) and monofocal and contralateral extended depth-of-focus (EDOF) IOL implantation. The main question it aims to answer is:

• does the combination of both monofocal and EDOF IOLs presents an advantage over bilateral monofocal IOL implantation in the daily life of patients undergoing cataract surgery without the disadvantages of bilateral EDOF IOL implantation?

Participants will:

  • be randomised in either bilateral monofocal group or monofocal and EDOF group
  • undergo visual acuity testing with and without correction at all distances
  • be asked to complete a quality of vision questionnaire
  • undergo non-invasive examinations to measure residual astigmatism, contrast sensitivity, straylight, optical aberrations, reading spead.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

50

Phase

  • 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 Locations

  • Belgium
    • Brussel Hoofdstedelijk Gewest
      • Brussels, Brussel Hoofdstedelijk Gewest, Belgium, 1090
        • UZ Brussel

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

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  • Patients aged between 50 and 90 years with bilateral cataract without concomitant exclusion criteria

Exclusion Criteria:

  • prior refractive surgery
  • patients with corneal opacities, retinopathy, opticopathy, glaucoma, uveitis and amblyopia
  • patients with corneal astigmatism greater than 3 diopters (D)
  • patients with expected postoperative astigmatism higher than 0.50D
  • prior ocular surgery in the last six months
  • patients with prior unilateral cataract surgery

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: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Triple

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Other: Bilateral monofocal intraocular lens
Standard treatment
Device: cataract surgery
cataract surgery
Experimental: Monofocal and contralateral extended depth-of-focus intraocular lens
Experimental treatment
Device: cataract surgery
cataract surgery

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Difference in binocular photopic distance corrected intermediate visual acuity between both groups using Radner chart.
Time Frame: 3 months
Difference in binocular photopic distance corrected intermediate visual acuity between both groups using Radner chart.
3 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Vrije Universiteit Brussel

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

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)

November 10, 2023

Primary Completion (Actual)

December 31, 2025

Study Completion (Actual)

December 31, 2025

Study Registration Dates

First Submitted

August 15, 2023

First Submitted That Met QC Criteria

August 15, 2023

First Posted (Actual)

August 21, 2023

Study Record Updates

Last Update Posted (Actual)

August 27, 2026

Last Update Submitted That Met QC Criteria

August 24, 2026

Last Verified

August 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 23219_EDOF study

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

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.

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