Change in Choroidal Thickness of Myopic Eyes With a Myopia Control Contact Lens

University Hospital Augsburg

Status: Invitation-only

Conditions: Myopia

Treatments: Device: Myopia control contact lens

Study type: Interventional

Funder types: Other

Identifiers

NCT06636019

24-0398

Details and patient eligibility

About

In this study, the direct effect of the MiSight contact lens (Cooper Vision), a daily disposable contact lens recently approved in Germany for the treatment of myopia, will be investigated. The aim of this study is to demonstrate an increase in choroidal thickness due to the myopic defocus induced by the contact lens. The increase in choroidal thickness after 30 minutes of exposure to the myopic defocus induced by the contact lens will be demonstrated by measuring the subfoveal and macular choroidal thickness.

Full description

The increasing incidence of short-sightedness (myopia) worldwide has led to the development of various therapies to control axial length myopia. The latest developments include contact lenses to inhibit the growth of the bulb length, which should influence the growth of the eye in childhood and adolescence by inducing a myopic defocus in the periphery of the retina.

In this study, the direct effect of the MiSight contact lens (Cooper Vision), a daily disposable contact lens recently approved in Germany for the treatment of myopia, will be investigated. The aim of this study is to demonstrate an increase in choroidal thickness due to the myopic defocus induced by the contact lens. The increase in choroidal thickness after 30 minutes of exposure to the myopic defocus induced by the contact lens will be demonstrated by measuring the subfoveal and macular choroidal thickness. In addition, the influence of accommodation will be investigated by measuring the choroidal thickness after 30 minutes of activity at near and far distance. One eye of each of 8 healthy subjects with myopic refraction from -0.5 diopters in the spherical equivalent will be included, with laterality (right/left) being randomized. The choroidal thickness is measured using optical coherence tomography (OCT), which is standard in clinical routine. The examination is non-invasive and is carried out at three points in time: The baseline measurement is carried out before inserting the contact lens, then after 30 minutes of exposure and near focusing. A further measurement is carried out within a week after a further 30 minutes of exposure and distance focusing, so that the results are not distorted by the previous near work. In addition, the axial length is determined at each of the 3 measurement times using optical biometry.

Enrollment: 10 estimated patients

Sex: All

Ages: 18+ years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• myopic refraction
• consent to participate
• minimum age 18 years
• full legal capacity

Exclusion criteria

• ocular disease affecting imaging quality including but not limited to cataract, keratoconus
• ocular disease affecting choroidal thickness (pachychoroidal disease)
• astigmatism greater than 1,5 diopters
• best corrected distance visual acuity of 0,1 logMAR or worse
• status post eye surgery
• status post treatment for myopia control

Trial design

Primary purpose: Prevention

Allocation: N/A

Interventional model: Single Group Assignment

Masking: None (Open label)

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10 participants in 1 patient group

Interventional arm

Experimental group

Description:

The myopia control contact lens will be administered in this group.

Treatment:

Device: Myopia control contact lens