Johnson and Johnson Vision Care, Inc.

Daoud R Iskander

Jeffrey H Roffman

Michael J Collins

Brett A Davis

Denwood F Ross, Iii

Denwood F Ross

An apparatus and method for measuring wavefront aberrations. The apparatus comprises a reflecting device for reflecting selected portions of the wavefront, an imaging device for capturing information related to the selected portions, and a processor for calculating aberrations of the wavefront from the captured information. The method comprises reflecting selected portions of a wavefront onto the imaging device, capturing information related to the selected portions, and processing the captured information to derive the aberrations.

Method and apparatus for measuring wavefront aberrations

The invention provides methods for designing lenses useful for correcting presbyopia that permits variation of the speed of the power change from distance to near vision power or near to distance vision power. The rate of change may be symmetrical around the midpoint or faster or slower on either side of the midpoint.

Methods for designing multifocal ophthalmic lenses

The invention provides a method for designing lenses and lenses produced thereby in which method locally fitted Chebyshev polynomials are used to design one or more of the lens' surfaces.

Methods for designing contact lenses

A method is provided which is used to design soft contact lens via corneal topographic analysis. The topography of the cornea is matched to a corresponding topography of a soft contact lens. A geometrical transformation which maps the corneal elevation onto the back surface of an unflexed soft contact lens is used to minimize errors induced by flexure of the lens. The mapping transformation takes into account the effects of flexure. As a result, the contact lens has a back surface with a curvature which matches the specific elevations of the cornea, while the front surface can be spherical or any desired symmetrical or asymmetrical shape.

Growing community of inventors

Hawthorne, Australia

Daoud R Iskander