US 12,345,964 B2
Toric contact lens stabilization design based on thickness gradients orthogonal to eyelid margin
Benjamin Straker, Jacksonville, FL (US)
Assigned to Johnson & Johnson Vision Care, Inc., Jacksonville, FL (US)
Filed by Johnson & Johnson Vision Care, Inc., Jacksonville, FL (US)
Filed on Apr. 8, 2022, as Appl. No. 17/716,957.
Application 17/716,957 is a continuation of application No. 16/441,314, filed on Jun. 14, 2019, granted, now 11,327,341.
Prior Publication US 2022/0229313 A1, Jul. 21, 2022
Int. Cl. G02C 7/04 (2006.01); G02C 7/02 (2006.01)
CPC G02C 7/048 (2013.01) [G02C 7/027 (2013.01); G02C 7/028 (2013.01); G02C 7/04 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A contact lens comprising:
a first surface;
a second surface disposed opposite the first surface and defining a volume of lens material therebetween having a varying thickness;
said first and second surfaces being joined at a common round peripheral lens edge; and
an optic zone positioned within the peripheral lens edge;
wherein a maximum thickness profile of the lens substantially matches an upper target eyelid margin shape derived from data from one or more images of one or more eyelid profiles, and wherein a thickness gradient of said maximum thickness profile along its length is oriented to be orthogonal to said maximum thickness profile;
wherein the maximum thickness profile extends continuously across the contact lens other than in said optic zone and at said peripheral lens edge;
wherein the maximum thickness profile has mirror symmetry about a vertical axis of the lens; and
wherein the maximum thickness profile has mirror symmetry about a horizontal axis of the lens.