This study evaluated the visual performance and optical quality of three lenslet design spectacle lenses. While all degraded visual performance in some capacity, the concentric design (highly and slightly aspherical) lenses generally had a significantly lower impact on both acuity and contrast than honeycomb configuration (HC).
This study reports two year results from a randomized clinical trial examining myopia control spectacle lenses with highly aspherical lenslets (HAL) or slightly aspherical lenslets (SAL). The findings showed the HAL lens controlled refractive and axial progression by 50-55% and SAL by around 30% over two years. Read more about the outcomes and comparisons to other myopia control spectacles here.
The newest myopia controlling spectacles can both correct and control myopia as effectively as contact lens options. How do Defocus Incorporated Multiple Segments (DIMS) and HIghly Aspherical Lenslet Target (H.A.L.T.) technology spectacle lenses work? Here we investigate and compare their design, presumed mechanism and comparative efficacy for myopia control, based on published research.
This study reports one year results from an ongoing randomized clinical trial examining spectacle lenses with highly aspherical lenslet (HAL) or slightly aspherical lenslet (SAL) technology. The findings showed the HAL lens controlled refractive and axial progression by 60-70% and SAL by 30-40% over the first 12 months.