Effect of Orthokeratology on Myopia Progression in French Children

Status

Completed

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT05700240

Enrollment

Registered

2023-01-26

Start date

2019-11-02

Completion date

2020-12-24

Last updated

2023-01-26

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Myopia Progression

Brief summary

To evaluate and to compare the effect of orthokeratology (OK) on axial elongation in French myopic children.

Interventions

DEVICEorthokeratology

rigid contact lenses

DEVICEsingle-vision spectacle correction

simple wear of spectacle

Study design

Observational model

COHORT

Time perspective

RETROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

7 Years to 17 Years

Healthy volunteers

Yes

Inclusion criteria

* 7 to 17 years old * Myopia between 0,50 D and 7.00 D * Astigmatism ≤ 4.00 D with-the-rule 180+-20 * Anisometropia ≤ 1.50 D * Myopia evolution ≥ 0.25 D over 6 months * Best-corrected visual acuity (BCVA) ≥ 20/20 (Snellen equivalent) * Follow-up period \> 6 months

Exclusion criteria

* Prior history of any other myopia control treatment (except for single vision distance spectacles) * Contraindication for contact lens wear or orthokeratology * Preexisting ocular (amblyopia, strabismus, ocular inflammation, trauma, or surgery) or systemic disease * Poor compliance to lens wear, examination or follow-up

Design outcomes

Primary

Measure	Time frame
Changes in axial length at one year	one year

Secondary

Measure	Time frame
changes in refractive error	one year
changes in choroidal thickness	one year

Countries

France

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026