LENS DESIGN AND METHOD FOR MINIMIZING VISUAL ACUITY VARIATION EXPERIENCED BY MYOPIA PROGRESSORS

摘要

Contact lenses incorporate power profiles which minimizes visual acuity variation for progressing myopes based on minimization of a variation of neural sharpness image quality over a specific time period. The contact lens includes a center and at least one peripheral zone surrounding the center, having a different dioptric power than at the center. The lens has a power profile selected from a group consisting of a power profile with spherical aberration, a multifocal power profile, a freeform power profile, and a segmented freeform power profile. The power profile is based on an initial paraxial power of a myopia progressor and a defined myopia progression rate over a specific time period, resulting in controlled changes of neural sharpness, thus minimizing changes in changes in visual acuity at a beginning of a time period and at an end of the time period.