Myopia Defocus Spectacle Lenses

Myopia, or nearsightedness, is rising rapidly in children worldwide and has become a major public health problem. Progressive myopia is associated not only with increasing spectacle power but also with excessive elongation of the eyeball that may increase the lifetime risk of retinal detachment, myopic macular degeneration, glaucoma, and other vision-threatening complications.

Modern myopia management is not only about improving vision, but also about slowing myopia progression and reducing excessive axial eye growth because of these long-term risks. Myopia defocus spectacle lenses are a special kind of glasses that have been created to help slow the progression of myopia in children. Instead of traditional single-vision spectacles, these lenses are designed with sophisticated optical designs to produce controlled peripheral myopic defocus and preserve clear central vision.

There is scientific evidence that peripheral retinal defocus plays an important role in regulating eye growth and controlling this defocus may help reduce progressive axial elongation associated with myopia. (pubmed.ncbi.nlm.nih.gov) Traditional Single-vision glasses primarily correct central refractive error but may still allow for peripheral hyperopic defocus, which is thought to stimulate additional eye growth in susceptible children. Contemporary spectacle lenses for myopia control are manufactured differently. These lenses have multiple defocus segments or specialized lenslets that allow simultaneous peripheral myopic defocus while maintaining comfortable central visual clarity for routine daily activities.

There is promising data from several international clinical studies using defocus spectacle lens technology. Research published in Nature Scientific Reports demonstrated significant reduction in myopia progression and axial elongation in children wearing highly aspherical lenslet spectacle lenses versus conventional spectacles.

Likewise, longer-term research on Defocus Incorporated Multiple Segments (DIMS) spectacle lenses showed a significant reduction in myopia progression and slower axial eye growth in children compared with standard single-vision spectacles. At Reform Vision Myopia Clinic, a comprehensive examination is performed before prescribing myopia defocus spectacle lenses. Since each child has different progression patterns and visual demands, the evaluation includes:

 Comprehensive refraction evaluation
 Cycloplegic refraction
 Axial length follow-up
 Analysis of accommodation and binocular vision
 Assessment of screen time and near work
 Assessment of outdoor activity
 Family history of nearsightedness
 Myopia defocus spectacle lenses may benefit children who:
 Progressive myopia in children
 Cases of early-onset myopia
 Children with fast progressing spectacle power
 Children with a Family History of High Myopia
 School-age children with too much near work or screen exposure

A key benefit of myopia control spectacle lenses is that they provide a non-invasive and child-friendly treatment option. Spectacle lenses are more practical to maintain than contact lens-based treatments and are often preferred for younger children or those not ready for contact lens wear.

 Benefits of myopia defocus spectacle lenses are:
 Evidence-based myopia progression control
 Reduced pathological axial eye growth
 Good central vision for everyday activities
 Easy to adjust for school going children
 A safe, non-surgical alternative.
 Easy to handle and maintain compared to contact lenses

It has also been shown through research that earlier intervention leads to better long term outcomes as younger children who have rapidly progressing myopia are at greater risk for developing high myopia later in life. Thus, regular follow-up remains important to monitor progression and assess response to therapy over time. Progress monitoring could include:

 Spectacle power evaluation
 Assessment of axial length
 Assessment of binocular vision
 Visual comfort study.
 Lifestyle and screen time review

At Reform Vision, we have modern evidence-based protocols for myopia management that are specifically designed to protect long-term ocular health while ensuring comfortable and effective visual correction for children with progressive myopia.