Science

Contact lenses

How does NaturalVue Multifocal 1 Day perform long-term for myopia?

This retrospective cohort analysis showed that NaturalVue Multifocal 1 Day contact lens wear appears to result in a mean refractive myopia progression of less than 0.25D per year, based on available data. Some limited axial length data was also presented.

A novel ring-focus soft contact lens design for myopia control

Two prototype myopia control soft contact lens designs with non-coaxial optics showed enhanced efficacy in one design and enhanced vision in the other, compared to dual-focus and single-vision designs. This initial data is for six months, and all myopia control contact lens designs showed close to 6/6 or 20/20 acuity equivalent.

How does the myopic peripheral retina respond to multifocal contact lens wear?

Analysis of the BLINK study results showed a global more than localized impact on slowing eye growth in +2.50 CD multifocal contact lens wear. The slowed growth effects were greater centrally than peripherally. This suggests local defocus responses may not provide the full story behind myopia control mechanisms.

Blur adaptation in children wearing orthokeratology

After 1 month of wearing orthokeratology lenses, children were shown to have reduced accommodative lag and increased blur sensitivity, leading to the suggestion that blur adaptation is conducive in achieving good visual acuities and visual function in ortho-k wear.

Time spent outdoors improves success with MiSight 1 day

This paper identified time spent outdoors as the key factor in predicting better myopia control outcomes in children wearing with MiSight 1 day contact lenses. Other factors which weren’t predictive included age, refraction, binocular vision findings, pupil size and time spent at near.

Do multi-zone myopia control lenses maintain their defocus profiles at all viewing distances?

This study showed that multi-zone spectacle and contact lenses used for myopia control provide myopic defocus at far distances. At near, changes in accommodative lag, pupil miosis and spherical aberration in individuals may mean there are lesser amounts of myopic defocus and reduced image quality. However, all the lenses were still able to provide sufficient image clarity at near for typical size print.

Dual focus contact lenses and near viewing

This study examines the effect that dual focus contact lenses have on accommodation and defocus during near viewing, and the results provide clues towards understanding the myopia control mechanism of these contact lenses.

The importance of myopia control soft contact lens design

Increasing power in a myopia control treatment zone of a multifocal soft contact lens can increase myopia control efficacy but negatively impact vision. This study is the first optical characterization of a novel design to improve this relationship between treatment zone power and vision quality.