Clinical Evaluation of a Myopia Control Lens in Slowing Myopia Progression (CSL)

July 30, 2023 updated by: Essilor International

Clinical Evaluation of a Myopia Control Lens in Slowing Myopia Progression - Contiguous Spherical Lenslet

This is a mono-centre, prospective, one-arm, unmask clinical trial to evaluate the effectiveness of test lens in slowing myopia progression with respect to axial length elongation compared to a single vision spectacle lens from the historical control group of another clinical trial NCT05331378. A total of 40 children will be recruited.

Study Overview

Status

Active, not recruiting

Conditions

Intervention / Treatment

Detailed Description

As myopia is a growing worldwide problem, it is important to better understand the range of possible treatments to slow the progression of myopia. Spectacle lenses with aspherical lenslets were shown to be effective in reducing myopia progression and axial length elongation in children in the previous clinical trial (Bao et al. 2022). A dose-dependent effect was demonstrated, with higher lenslet asphericity having greater myopia control efficacy.

This open clinical trial will test the safety and effectiveness of a test lens designed to modify the area and amount of myopic defocus on the retina without compromising vision. The study population includes children in Singapore aged 8 to 13 years (40 subjects) at the time of commencing treatment. Axial length and spherical equivalent refraction will be the primary measure for myopia progression. Visual acuities will also be compared between test lenses and control lenses of the historical control group to determine the quality of vision using test lenses

Study Type

Interventional

Enrollment (Estimated)

40

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 Contact

Study Contact Backup

Study Locations

  • Singapore
      • Singapore, Singapore, 339346
        • Essilor R&D Centre Singapore

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

8 years to 13 years (Child)

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  • Volunteer subject and guardian, fluent English spoken, willing to follow protocol and able to read, comprehend and sign the informed consent & assent form.
  • 8 to 13 years old at time of informed consent and assent.
  • Spherical equivalent refractive error (SER) by manifest refraction between -0.75 and -4.75 D in each eye.
  • Astigmatism, if present, of not more than 1.50 D.
  • Difference in SER between the two eyes (Anisometropia) by manifest refraction not more than 1.00 D.
  • Best corrected visual acuity in each eye equal to or better than +0.10 logMAR (≥ 20/25 as Snellen)
  • Be in good general health based on his/her and parent's/guardian's knowledge. Absence of ocular disease with full ophthalmic examination. Without any ocular or systemic condition known to affect refractive status.
  • Absence of strabismus by cover test at near or distance wearing correction.
  • Absence of amblyopia
  • Without ocular or systemic medications which, in the investigator's opinion, may significantly affect pupil size, accommodation or refractive state.

Exclusion Criteria:

  • Vulnerability of subject
  • History of myopia control intervention
  • Participation in any clinical study within 30 days of the Baseline visit.

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
Intervention / Treatment
Experimental: Test myopia control lenses (CSL)
A pair of myopia control spectacle lenses (test lenses) will be given to subjects to wear for 12 months
Device: Test myopia control lenses (CSL)
A pair of myopia control spectacle lenses (test lenses) will be given to subjects to wear for 12 months

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Axial Length
Time Frame: 12 months
Change in ocular axial length (mm) measured using Lenstar Optical Biometer.
12 months

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Spherical Equivalent Refraction
Time Frame: 6 months and 12 months
Change in spherical equivalent refraction (Dioptres) through manifest subjective refraction.
6 months and 12 months

Collaborators and Investigators

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

Sponsor

Essilor International

Investigators

  • Principal Investigator: Andrew Tan, Essilor R&D Centre Singapore

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)

February 13, 2023

Primary Completion (Estimated)

June 1, 2024

Study Completion (Estimated)

June 1, 2024

Study Registration Dates

First Submitted

February 2, 2023

First Submitted That Met QC Criteria

February 2, 2023

First Posted (Actual)

February 13, 2023

Study Record Updates

Last Update Posted (Actual)

August 1, 2023

Last Update Submitted That Met QC Criteria

July 30, 2023

Last Verified

July 1, 2023

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • WS10314

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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