Dynamic tear lenses
AssigneeJohnson & Johnson Vision Care, Inc.
InventorsOmer Rafaeli, Eugene De Juan, Jr., Yair Alster, Ofer Pintel, Matt Clarke
Life of this patent
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Abstract
Dynamic contact lenses fabricated with a dynamic portion that extends outward from the peripheral portion are disclosed. When worn on an eye the dynamic portion forms a tear lens for correcting vision. The dynamic portion can also be configured to provide a dynamic tear lens that changes optical power with forces applied by eyelids. The dynamic portion can be configured to assume a conforming configuration and at least one non-conforming configuration, or can be configured to assume at least two non-conforming configurations. The dynamic contact lenses can be used for correcting vision such as correcting presbyopia.
Claims18
A dynamic contact lens comprising:
- a dynamic portion comprising a dynamic posterior surface and a dynamic anterior surface opposite the dynamic posterior surface, wherein the dynamic portion has a diameter from 2.5 mm to 7 mm;
- a peripheral portion comprising a peripheral posterior surface, a peripheral anterior surface opposite the peripheral posterior surface, and
- a transition zone coupling the peripheral portion and the dynamic portion,
- wherein the peripheral portion comprises a tear fluid reservoir comprising tear fluid, wherein the transition zone is configured to facilitate flow of the tear fluid between the tear fluid reservoir and the dynamic portion in response to different pressures applied to the tear fluid reservoir from different relative positions of a lower eyelid and an upper eyelid;
- wherein the dynamic contact lens is configured to produce a tear lens for correcting vision when applied to a cornea;
- and
- wherein the tear lens can assume two or more quasi-stable configurations, wherein the two or more quasi-stable configurations are characterized by a different gap between the center of the dynamic posterior surface and the cornea in response to said different pressures applied to the tear fluid reservoir by the lower eyelid and the upper eyelid.
Dependencies are inferred from the claim text.