Prismatic contact lens
AssigneeNeurolens, Inc.
InventorsJeffrey P. Krall, Aric Plumley
Life of this patent
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Abstract
A class of prismatic contact lenses includes a first prism zone, having a first prism and a first optical power; and a progressive prism zone, adjacent to the first prism zone, having a progressive prism that varies from the first prism to a second prism. The prismatic contact lens can further comprise a second prism zone, adjacent to the progressive prism zone, having the second prism and a second optical power. Another class of prismatic contact lenses include a first prism zone, having a first prism and a first optical power; a second prism zone, adjacent to the first prism zone, having a second prism and a second optical power; and a sharp transition between the first prism zone and the second prism zone.
Claims9
A prismatic contact lens, comprising:
- a first prism zone, having a first prism and a first optical power in a central circular region;
- a progressive prism zone, having a progressive prism that gradually varies from the first prism to a second prism in a ring around the central circular region;
- and
- a second prism zone, adjacent to the progressive prism zone, having the second prism and a second optical power in a ring around the progressive prism zone;
- wherein
- the prismatic contact lens has an orienting system to orient an x-axis and a y-axis of the prismatic contact lens when worn on an eye;
- and
- a refraction direction of at least one of the first prism and the second prism is oriented along the x axis, as oriented by the orienting system.
Dependencies are inferred from the claim text.