Wide depth of focus intraocular and contact lenses
OwnerHenry C. Oksman, Joseph Eisnerinventors
Life of this patent
Estimating the term…
Abstract
A lens and method of fabrication thereof for increasing depth of focus where the lens power can be a constant but the amplitude and phase of the wave across the pupillary aperture are variables. The lens can be constructed by shading regions thereof in accordance with a mathematical function, e.g., a Gaussian distribution or Bessel function over a predetermined geometry, such as e.g., concentric, parallel or radial. The lens may be of single power or multiple power, e.g., of the bi-focal type.
Claims19
A lens adapted to be worn on, or implanted in, the eye comprising a substrate having a surface with a plurality of regions of at least partial transparency, at least one of said regions having a degree of transparency greater than another of said regions more distant from the center of said lens than said one region for enabling viewing with an extended depth of focus.
A method of increasing depth of focus for a lens adapted to be worn on, or implanted in, the eye comprising rendering the transparency of at least one of a plurality of regions of at least partial transparency of said lens greater than the transparency of another of said regions more distant from the center of said lens than said one region.
Dependencies are inferred from the claim text.