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Variation of Orthokeratology Lens Treatment Zone (VOLTZ) Study

NCT03191942 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 70

Last updated 2022-07-20

No results posted yet for this study

Summary

This project aims to study the effects of treatment characteristics on myopia control in orthokeratology by investigating the effects of modified treatment zone by reducing the lens back optic zone diameter on the effect of myopia control. The project will be a two-year randomized, double-masked (examiner - mask axial length only) study conducted at The Hong Kong Polytechnic University recruiting sixty Chinese subjects aged between 6-11. Subjects will be randomly assigned to two ortho-k groups. The Control group will wear KATT BeFree lens with a BOZD of 6mm while the Test group will wear KATT MC lens with a modified BOZD of 5mm.

Conditions

  • Myopia

Interventions

DEVICE

Modified ortho-k lenses

KETT MC lens

DEVICE

Ortho-k lenses

KATT BeFree lens

Sponsors & Collaborators

  • The Hong Kong Polytechnic University

    lead OTHER

Principal Investigators

  • Pauline Cho, phd · The Hong Kong Polytechnic University

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Model
PARALLEL

Eligibility

Min Age
6 Years
Max Age
11 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2017-06-20
Primary Completion
2021-03-21
Completion
2021-07-27

Countries

  • Hong Kong

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT03191942 on ClinicalTrials.gov