What purpose does a minus lenticular design serve?

The purpose of a minus lenticular design is primarily to provide a peripheral wedge that interacts effectively with the eyelids during blinking and other movements. This design is particularly beneficial for high myopes who require significantly thinner lenses in the central area to correct their vision. By incorporating a lenticular design, these lenses can reduce the overall weight and thickness of the lens profile, especially around the edges, improving comfort and maintaining aesthetic appeal.

This peripheral wedge is crucial as it helps to create a smoother transition between the lens and the eyelid, promoting more natural lid interaction. Such designs minimize the risk of lens displacement and discomfort during wear, ultimately resulting in better visual performance for the wearer. The specific geometry of the lenticular shape allows for more effective management of the lens's thickness while ensuring that the necessary correction is still achieved at the center of the lens.