Myopia Control Effect of DIMS Spectacle Lenses in Czech Children and Young Adults

Czech Technical University in Prague

Status: Active, not recruiting

Conditions: Myopia

Treatments: Other: Single Vision Spectacle Lens; Other: Defocus Incorporated Multiple Segments (DIMS) Spectacle Lens

Study type: Observational

Funder types: Other

Identifiers

NCT05943912

SGS23/195/OHK4/3T/17

Details and patient eligibility

About

The aim of this clinical study is to compare the efficacy of DIMS technology spectacle lenses with conventional single vision spectacle lenses at slowing the progression of myopia in the category of children and young adults during three years.

Full description

The study is non randomized, unmasked, observational and prospective. Participants aged 6-26 with progressing myopia (but no ocular pathology), all Caucasian, are divided in two groups according to single vision spectacle lenses (SV) and DIMS technology lenses (DIMS). The participants are followed during three years (axial length, refraction changes).

Defocus incorporated multiple segments (DIMS) spectacle lenses were designed to slow myopia progression in children, based on the principle of peripheral myopic defocus. DIMS spectacles reduce the progression of myopia and reduce axial elongation by 50-60% compared to single vision (SV) lenses according to previous scientific studies conducted mostly on the Asian population under the age of 15.

The majority of myopia appears and progresses during childhood. The myopia stabilizes by the age of 18 years, a number of individuals may still present myopic changes.

The goals of our study:

• compare the efficacy of DIMS spectacle lenses with SV spectacle lenses at slowing the progression of myopia in the category of Czech children and young adults (effect on axial length and refractive changes)
• monitoring axial length and refractive changes in myopic children and young adults (aged 6-26)
• monitoring adaptation to DIMS lenses in myopes aged 6-26 years monitoring the influence of the environment and individual behavior on the progression of myopia

Enrollment: 80 patients

Sex: All

Ages: 6 to 26 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Progressive myopia
• Myopes aged 6-26 years
• Myopia between -0,25D and -8,5D
• Astigmatism -0,25 and -2,25DC

Exclusion criteria

• Ocular pathology
• Amblyopia
• Strabism
• Non-compliance to eye examinations

Trial design

80 participants in 2 patient groups

Single Vision Spectacle Lens

Description:

Participants who chose to correct myopia with single vision spectacle lenses.

Treatment:

Other: Single Vision Spectacle Lens

Defocus Incorporated Multiple Segments (DIMS) Spectacle Lens

Description:

Participants who chose to correct myopia with DIMS spectacle lenses.

Treatment:

Other: Defocus Incorporated Multiple Segments (DIMS) Spectacle Lens