Completed

Clinical Trial of Orthokeratology Lens (MCOK-01)

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What is being tested

Test orthokeratology lens

+ Control orthokeratology lens

Device
Who is being recruted

Eye Diseases

+ Myopia

+ Refractive Errors

From 6 to 40 Years
See all eligibility criteria
How is the trial designed

Treatment Study

Interventional
Study Start: July 2022
See protocol details

Summary

Principal SponsorMenicon Co., Ltd.
Last updated: January 28, 2026
Sourced from a government-validated database.Claim as a partner

Study start date: July 29, 2022

Actual date on which the first participant was enrolled.

This study focuses on testing a new type of contact lens called the orthokeratology lens, which is designed to improve vision by temporarily reshaping the cornea. The study compares this new lens to another orthokeratology lens that is already available on the market. It aims to enroll 390 participants and observe them over a period of 12 months. The goal is to assess how well the new lens performs in comparison to the existing option, which could lead to better vision correction solutions for those needing such lenses. Participants in this study will use the orthokeratology lenses as part of their daily routine. The study does not specify the exact method of lens application, but typically such lenses are worn overnight to reshape the cornea while sleeping. During the 12-month observation period, researchers will closely monitor the effectiveness and safety of the lenses by examining various vision-related outcomes. Although specific risks and benefits are not detailed, the study aims to ensure that the new lenses are at least as effective and safe as the existing ones.

Official TitleClinical Trial of Orthokeratology Lens (MCOK-01)
Principal SponsorMenicon Co., Ltd.
Last updated: January 28, 2026
Sourced from a government-validated database.Claim as a partner

Protocol

This section provides details of the study plan, including how the study is designed and what the study is measuring.
Design Details

390 patients to be enrolled

Total number of participants that the clinical trial aims to recruit.

Treatment Study

These studies test new ways to treat a disease, condition, or health issue. The goal is to see if a new drug, therapy, or approach works better or has fewer side effects than existing options.



Eligibility

Researchers look for people who fit a certain description, called eligibility criteria: person's general health condition or prior treatments.
Conditions
Criteria

Any sex

Biological sex of participants that are eligible to enroll.

From 6 to 40 Years

Range of ages for which participants are eligible to join.

Healthy volunteers allowed

If individuals who are healthy and do not have the condition being studied can participate.

Conditions

Pathology

Eye DiseasesMyopiaRefractive Errors

Criteria

Inclusion Criteria: 1. Patients with myopia and myopic astigmatism 2. Those who are not willing to wear glasses in daily life 3. Fully understand of the purpose of the clinical trial and agree to sign the informed consent form to participate in clinical trials, based on his/her willingness 4. Those who can visit the institution on scheduled dates 5. Those who can receive guidance and tests as required by the investigator 6. Those who fully understand and follow the instructions of the lenses for this clinical trial Exclusion Criteria: \<At screening\> 1. Best corrected vision acuity of less than 0.8 with spectacles 2. Subjective refraction test shows spherical power greater than -6.00D,less than -0.50D or astigmatism greater than 1.5D 3. Patients in need of treatment for eye disease other than refractive error (excluding those receiving artificial tears eye drops due to the wearing of corneal contact lenses) 4. The medical history of intraocular surgery that may affect the effect of wearing the lens for this clinical trial (those with corneal transplantation, Retinal detachment, etc.) 5. The medical history of refractive corneal surgery 6. Those in need of a strength out of the scope of lens for this clinical trial 7. Having eye allergic diseases that may cause disorders in wearing the lenses for this clinical trial 8. All Corneal abnormalities including keratoconus, corneal dystrophy, previous history of ocular herpes infections, acute dry eyes, low corneal endothelial cell counts. 9. Pregnant (judgment according to her known information) or those who plan to become pregnant during clinical trial, or those who are breast feeding 10. Those who are participating in other clinical trials or have participated in other clinical trial in the past 30 days 11. Prior experience with use of rigid lenses within the previous 3 weeks or use of soft lenses within the previous 3 days 12. Prior experience with myopia control treatment (e.g. atropine, orthokeratology, multifocal soft contact lenses) 13. Minor/adult subjects who lack mental capacity 14. Other not suitable for this clinical trial at investigator's discretion \<At the beginning of the wearing\> (1) Those who are determined to be unable to obtain good centralized positioning even though changing strength (2) Pregnancy confirmed (3) Those who are difficult in continuing the clinical trial at investigator's discretion

Study Plan

Find out more about all the medication administered in this study, their detailed description and what they involve.
Treatment Groups
Study Objectives

2 intervention groups are designated in this study

This study does not include a placebo group 

Treatment Groups

Group I

Experimental
Randomized to Treatment

Group II

Active Comparator
Randomized to Control

Study Objectives

Primary Objectives

Secondary Objectives

Study Centers

These are the hospitals, clinics, or research facilities where the trial is being conducted. You can find the location closest to you and its status.

This study has 3 locations

Suspended

I&VISION Research Centre

Singapore, SingaporeOpen I&VISION Research Centre in Google Maps
Suspended

Myopia Specialist Centre

Singapore, Singapore
Suspended

Stan Isaacs

Singapore, Singapore
Completed3 Study Centers