Myopia Control With Orthokeratology Contact Lenses in Spain (MCOS)

The purpose of this prospective study is to assess the efficacy, safety and patient-reported outcomes of the Menicon Z Night orthokeratolgy contact lens for reducing myopia progression in children.

Study Overview

• Status: Completed
• Conditions: Children, Only; Myopia, Progressive; Contact Lens Complication; Perception, Self; Axial Myopia
• Intervention / Treatment: Device: Menicon Z Night; Device: Control

Detailed Description

The purpose of this prospective study is to assess the efficacy, safety and patient-reported outcomes of the Menicon Z Night orthokeratolgy contact lens for reducing myopia progression in children in comparison with a group of distance, single-vision glasses over a 2-year period. Efficacy was evaluated by assessing differences in the axial length between groups. Safety was evaluated by comparing the incidence of adverse events between groups. Differences between groups in patient-reported outcomes were evaluated using a questionnaire that assessed vision-related quality-of-life measures.

• Study Type: Interventional
• Enrollment (Actual): 69
• Phase: Not Applicable

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 6 years to 12 years (Child)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Be 6 to 12 years of age, both ages inclusive
• A low-to-moderate level of myopia (between -0.75 and -4.00 D) and of astigmatism (≤ 1.00 D)
• Neophyte contact lens wearer
• Be successfully fitted with spectacles or orthokeratology contact lenses
• Be able to achieve, through spherical refraction correction, a logMAR visual acuity of 0.8 or better in each eye
• Be willing and able to follow the subject instructions and to meet the protocol-specified schedule of follow-up visits
• White European ethnicity

Exclusion Criteria:

• Systemic or ocular disease affecting ocular health
• Use of any systemic or topical medications that could affect ocular physiology or contact lens performance
• Any lid or anterior segment abnormalities for which contact lens wear could be contraindicated
• CCLRU grade ≥ 2 for any given anterior segment ocular clinical signs
• Aphakic, amblyopic, and atopic individuals
• Refractive astigmatism ≥ ½ spherical refraction
• Previous contact lens wear

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Non-Randomized
• Interventional Model: Parallel Assignment
• Masking: None (Open Label)

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Menicon Z Night; The experimental group is allocated to wear Menicon Z Night orthokeratology contact lenses for two years	Device: Menicon Z Night; To assess the use of Menicon Z Night contact lenses for reducing myopia progression in children
Active Comparator: Glasses; The active comparator includes a group that was allocated to wear distance, single-vision glasses for two years	Device: Control; Distance, single-vision glasses were used as control

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Axial length	To compare axial length growth between white children with myopia wearing Menicon Z Night orthokeratology contact lenses and distance single-vision glasses. Measurements of axial length (in millimeters) were taken with the Zeiss IOLMaster (Carl Zeiss Jena GmbH, Jena, Germany). Three separate measurements of axial length were recorded per subject and per visit, and a mean obtained.	Two years

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Adverse events	To compare the incidence of adverse events between white children with myopia wearing Menicon Z Night orthokeratology contact lenses and distance single-vision glasses. Adverse events were classified into serious, significant, or non-significant. Recurrences of the same adverse event(s) in the same or fellow eye at any of the subsequent study visits were classified as separate events; bilateral events will be counted as two separate events. The incidence of adverse events was calculated as a percentage of eyes per annum.	Two years
Patient-reported outcomes	To compare vision-related quality-of-life measures between children wearing Menicon Z Night orthokeratology contact lenses and distance single-vision glasses. The pediatric refractive error profile survey was used to compare patient-reported outcomes in terms of the vision-specific quality of life between children in the Menicon Z Night and control groups. The survey consists of 26 statements scored from 1 (poor quality of life) to 5 (good quality of life), then scaled from 0 to 100 by subtracting 1 from the raw score of each question and multiplying by 25. The mean score of all items was calculated as the overall score. The survey includes 11 scales: overall vision, near vision, far distance vision, symptoms, appearance, satisfaction, activities, academics, handling, peer perception, and overall score.	Two years

Collaborators and Investigators

• Sponsor: Menicon Co., Ltd.
• Collaborators: Universidad Europea de Madrid; Aston University; Clinica novovision

Publications and helpful links

General Publications

• Santodomingo-Rubido J, Villa-Collar C, Gilmartin B, Gutierrez-Ortega R. Myopia control with orthokeratology contact lenses in Spain: refractive and biometric changes. Invest Ophthalmol Vis Sci. 2012 Jul 31;53(8):5060-5. doi: 10.1167/iovs.11-8005.
• Santodomingo-Rubido J, Villa-Collar C, Gilmartin B, Gutiérrez-Ortega R. Orthokeratology vs. spectacles: adverse events and discontinuations. Optom Vis Sci. 2012 Aug;89(8):1133-9. doi: 10.1097/OPX.0b013e318263c5af.
• Santodomingo-Rubido J, Villa-Collar C, Gilmartin B, Gutiérrez-Ortega R. Myopia control with orthokeratology contact lenses in Spain: a comparison of vision-related quality-of-life measures between orthokeratology contact lenses and single-vision spectacles. Eye Contact Lens. 2013 Mar;39(2):153-7. doi: 10.1097/ICL.0b013e31827a0241.

Study record dates

Study Major Dates

• Study Start (Actual): March 1, 2007
• Primary Completion (Actual): March 1, 2010
• Study Completion (Actual): March 1, 2010

Study Registration Dates

• First Submitted: March 10, 2021
• First Submitted That Met QC Criteria: March 17, 2021
• First Posted (Actual): March 19, 2021

Study Record Updates

• Last Update Posted (Actual): March 26, 2021
• Last Update Submitted That Met QC Criteria: March 23, 2021
• Last Verified: March 1, 2021

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Eye Diseases; Refractive Errors; Myopia; Myopia, Degenerative
• Other Study ID Numbers: MCOS

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