Methods and apparatus for forming a translating multifocal contact lens

Patent metadata

Field	Value
Publication number	US-2016170231-A1
Application number	US-201514751466-A
Country	US
Kind code	A1
Filing date	Jun 26, 2015
Priority date	Mar 30, 2012
Publication date	Jun 16, 2016
Grant date	—

Abstract

The present invention discloses a translating multifocal contact lens including one or more of multiple Optic Zones, a lower-lid contact surface, and an under-lid support structure and method steps and apparatus for implementing the same. In preferred embodiments, a translating multifocal lens with at least a portion of one surface may be Free-formed comprising one or both of a lower-lid contact surface and an under-lid support structure capable of limiting the amount of translation of a lens across a surface of an eye when an eye changes from one Optic Zone to another.

First claim

What is claimed is:

1 . A method for forming a custom translating multi-focal contact lens for a patient, comprising:
obtaining measurement data reflecting physical geometries of an eye of said patient, including at least a position of a lower lid of said patient relative to an upper lid of said patient, a radius of curvature of said lower lid, and a distance of said lower lid from a pupil center of said patient; using said measurement data to design a shape and location of a lower lid contact surface for said custom translating multi-focal contact lens; incorporating said design of said lower lid contact surface into a Lens Design for said custom translating multi-focal contact lens; and creating a Free Form custom translating multi-focal contact lens based on said Lens Design.

2 . The method according to claim 1 , wherein the lower lid contact surface is contoured to an exact shape of a patient's lower eyelid.

3 . The method according to claim 1 , wherein the lower lid contact surface comprises an inward extension of the anterior lens surface that extends laterally across an entire anterior lens surface of said created Free-Form lens.

4 . The method according to claim 1 , wherein the lower lid contact surface adjoins an under lid support structure.

5 . The method according to claim 1 , wherein measurement data is obtained using one or more of a topographer, a wavefront detector, a microscope and a video camera.

6 . The method according to claim 5 , further comprising the step of converting the patient's eye data by algorithms into usable lens parameters.

7 . The method according to claim 6 , wherein the usable lens parameters are utilized to define lens features included in the Lens Design.

Assignees

• Wildsmith Christopher
• Widman Michael
• Adams Jonathan P
• Johnson & Johnson Vision Care

Inventors

• Wildsmith Christopher
• Widman Michael
• Adams Jonathan P

Classifications

• G02C7/048

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

• G02C7/043 Primary

  Translating type · CPC title

• G02C7/027 Primary

  considering wearer's parameters · CPC title

• B29D11/00961

  using microprocessors or computers · CPC title

• B29D11/00028

  Bifocal lenses; Multifocal lenses · CPC title