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US 6,746,119 B2Granted
Soft multifocal contact lens
AssigneeIOLCO Pty Ltd.
InventorDonald Frederick Ezekiel
Life of this patent
Estimating the term…
Abstract
A multifocal contact lens (10, 50) made of flexible material is able to translocate on an eye by virtue of a lower end (22) of the contact lens (10, 50) being truncated so as to provide a relatively wide surface. The lower end (22) engages with the lower eyelid of a wearer. The lower end (22) may be provided with a forwardly projecting ledge (52).
Claims26
A multifocal contact lens, comprising
- a distant vision segment;
- a close range vision segment;
- the lens having a periphery, a front surface, a rear surface having a curvature, an upper end, and a lower end;
- the distant vision segment being located close to the upper end relative to the close range vision segment which is located close to the lower end;
- a truncated portion located at the lower end;
- the truncated portion being arranged to rest on a lower eyelid;
- and
- a forwardly projecting ledge at the lower end of the contact lens, the forwardly projecting ledge including upwardly curved end portions, wherein the contact lens is configured to translocate on an eye.
5 more elements
Dependencies are inferred from the claim text.