Our Q&A format explores new technologies, products and research with experts. In this interview, Dr Sherman Tung, optometrist from Canada, shares his experience with The SightGlass Vision DOT 0.2 Lens in his practice, from prescribing to parent explanations and clinical outcomes.
Peripheral vision function and reading speed were unaffected by highly aspherical (HAL) and slightly aspherical lenslet (SAL) spectacle lens designs compared to single vision lenses. Low contrast acuity was slightly reduced through the lenslet zone.
In this case, a colleague has his first experience with the new Essilor Stellest spectacle lens for childhood myopia, with discussion including when to change the prescription and when to stop treatment.
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).
Spectacle lenses which effectively control myopia progression are the next phase in widespread uptake of myopia management. Learn more about the Essilor Stellest lens, from myopia control to vision and visual function outcomes.
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.
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.
An 8-year-old child is essentially monocular, due to unilateral high myopia associated with coloboma. The normally sighted eye has low myopia. How should we best balance safety and proactive myopia control in such a case?
Children who had already participated in the two-year clinical trial either continued wearing DIMS or switched from the control SV to DIMS. Comparison to an age-matched historical control group showed a myopia control effect in the third year.
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.
