Friction stabilized contact lenses

Patent metadata

Field	Value
Publication number	US-2018180902-A1
Application number	US-201815897308-A
Country	US
Kind code	A1
Filing date	Feb 15, 2018
Priority date	Oct 28, 2015
Publication date	Jun 28, 2018
Grant date	—

Abstract

A contact lens incorporating one or more surface modified zones on the anterior surface of the lens may be utilized to generate a friction driven rotational force when the upper and/or lower eyelids pass over the one or more regions during blinking. A small difference in the coefficient of friction between the modified and unmodified regions of the lens may result in an equivalent rotational force to that of a thickness gradient lens. This small difference in the coefficient of friction produces a means to orient and stabilize the contact lens on eye.

First claim

1 - 6 . (canceled)

7 . An ophthalmic device comprising:
a contact lens having an anterior surface and a posterior surface and requiring linear translation on eye, the contact lens being formed from a first lens material; and a single modified zone incorporated at least one of into or onto the anterior surface of the contact lens, the single modified zone being configured to facilitate interaction with the lower eyelid such that an eye of the wearer is free to move under the contact lens while the lens remains stationary due to interaction of the single modified zone and a lower eyelid of the wearer, the single modified zone comprising a second lens material with a coefficient of friction greater than the first lens material by 0.1 or greater.

8 . The ophthalmic device according to claim 7 , wherein the lens material comprises a silicone hydrogel.

9 . The ophthalmic device according to claim 7 , wherein the single surface modified zone is positioned in an inferior portion of the contact lens.

10 . The ophthalmic device according to claim 9 , wherein the single surface modified zone is positioned between a horizontal axis extending through a geometric center of the contact lens to an edge of the contact lens.

11 . The ophthalmic device according to claim 7 , wherein the single surface modified zone is positioned between an edge of the contact lens and extending towards a geometric center of the contact lens a distance of about 1.5 mm.

12 . (canceled)

Assignees

• Johnson & Johnson Vision Care

Inventors

• Franklin Steven
• Hendriks Cornelis Petrus
• Hofman Gregory
• Tokarski Jason
• Warmerdam Thom

Classifications

• G02C7/049

  Contact lenses having special fitting or structural features achieved by special materials or material structures · CPC title

• G02C7/048 Primary

  Means for stabilising the orientation of lenses in the eye · CPC title

• B29D11/00048

  composed of parts with dissimilar composition (B29D11/00057 takes precedence) · CPC title

• B29D11/00326

  having particular surface properties, e.g. a micropattern · CPC title

• G02C7/043

  Translating type · CPC title