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US 11,029,538 B2Granted
Contact lenses having an ion-impermeable portion and related methods
AssigneeCooperVision International Limited
InventorsCheng-Chun Peng, Percy Lazon de la Jara
Life of this patent
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Abstract
Contact lenses that have an ion-impermeable portion and an ion-permeable portion that are able to move on the eye without binding to the eye are described. The contact lenses exhibit an average ionoflux transmittance of at least 1.34×10−4 mm/min. One or more electronic components can be included in the contact lenses. Methods of making the contact lenses are also described.
Claims26
A contact lens, comprising:
- a lens body that comprises an ion-impermeable portion, and an ion-permeable portion, the lens body having an average ionoflux transmittance of at least 1.34×10−4 mm/min and wherein the lens body comprises an optic zone that comprises an electronically adjustable optic.
A contact lens, comprising:
- a lens body that comprises an ion-impermeable portion, and an ion-permeable portion,
- wherein the ion-impermeable portion comprises an electronically adjustable optic that provides a first refractive power without energy, and adjusts to a different second refractive power upon receiving energy, and at least one additional electronic component to provide the energy to the electronically adjustable optic, and
- wherein the ion-permeable portion comprises a hydrogel polymeric material or a silicone hydrogel polymeric material, and the ion-permeable portion is present as an annulus extending radially inwardly from a lens edge circumscribing the lens body by a distance that is at least 7% of a chord diameter of the lens body.
A contact lens, comprising:
- a lens body that comprises an ion-impermeable portion, and an ion-permeable portion, the lens body having an average thickness of at least 200 micrometers, and an ionoflux diffusion coefficient of at least 2.68×10−5 mm2/min.
Dependencies are inferred from the claim text.