US 12,443,054 B2
Myopia-control contact lenses and methods relating thereto
Arthur Bradley, Bloomington, IN (US); Martin Webber, Southampton (GB); Paul Chamberlain, Livermore, CA (US); Baskar Arumugam, Dublin, CA (US); and David S. Hammond, Pleasanton, CA (US)
Assigned to COOPERVISION INTERNATIONAL LIMITED, Fareham (GB)
Filed by CooperVision International Limited, Fareham (GB)
Filed on Jan. 16, 2023, as Appl. No. 18/097,295.
Claims priority of provisional application 63/301,650, filed on Jan. 21, 2022.
Prior Publication US 2023/0236439 A1, Jul. 27, 2023
Int. Cl. G02C 7/04 (2006.01)
CPC G02C 7/049 (2013.01) [G02C 2202/20 (2013.01); G02C 2202/22 (2013.01); G02C 2202/24 (2013.01)] 22 Claims
OG exemplary drawing
 
1. An ophthalmic lens for use in preventing or slowing the development or progression of myopia, the ophthalmic lens comprising an optic zone for focusing light from distant point objects to a focal surface,
wherein the optic zone comprises a diffractive lens for manipulating the longitudinal chromatic aberration properties of the light proximate the focal surface,
the optic zone comprises an annular region and a central region,
the central region comprises said diffractive lens,
the annular region has a greater optical power than the base power of the central region,
the annular region does not comprise a diffractive lens for manipulating the longitudinal chromatic aberration properties of the light, and
the diffractive lens is configured to reverse or increase the longitudinal chromatic aberration caused by the natural eye.