Myopia control glasses
Many studies have explored bifocal and progressive lenses as a means of myopia control, however the effect of these correction options has been limited, with as little as 0.25D reduction in progression per year1.
Management strategies are evolving and nowadays there are myopia controlling options in spectacle lenses for those myopic children who aren’t yet ready for contact lenses. We understand that some parents and children are just not comfortable with the thought of contact lenses and wearing glasses is within everyone’s comfort zones.
At this time, myopia controlling glasses are not the most effective treatment for myopia control, but they are certainly better than just persisting with the current glasses and making them stronger year on year. These glasses are a totally different design to what your child probably wears in their current glasses, and to get the benefits of myopia control these spectacles need to be worn full time.
We continue to read updated evidence and investigate the technology surrounding new products, to ensure we provide the safest and most effective management options.
MiyoSmart is an innovative spectacle lens for myopia control developed by The Hong Kong Polytechnic University for Hoya. The design utilises DIMS technology. Put simply, the central portion of the spectacle lens has the myopic prescription for clear distance vision, surrounded by a treatment zone that focuses the peripheral light inside the eye to control myopia progression. Unlike a contact lens, myopia controlling spectacle lenses don’t move with the eye, but the treatment zone has very little impact on vision, and a significant impact on controlling myopia. Studies over 2 years show a significant reduction in both the refractive change (the prescription) and the axial elongation (eyeball length).
In 2018, Essilor initiated a 3 year clinical trial on 167 myopic children in a joint partnership with Wenzhou Medical University, in China to develop Stellest lenses. Stellest lenses use HALT technology which basically means the design consists of rings of little lenslets to focus the peripheral light inside the eye to control myopia progression. Studies over 3 years show a significant reduction in both the refractive change (the prescription) and the axial elongation (eyeball length) when worn 12 hours or more per day every day.
Recently a newly designed spectacle lens called MyoVision, manufactured by Zeiss, has become available. Early studies show these spectacles have no significant effect on myopia progression in older age groups, however they do have some effect on younger children (ages 6-12)2.
1. Li SM, Ji YZ, Wu SS, et al. Multifocal versus single vision lenses intervention to slow progression of myopia in school-age children: A meta-analysis. Surv Ophthalmol 2011;56:451–460. [PubMed]