Abstract: The present invention provides single vision and multifocal lenses, as well as methods for their production, having a transverse chromatic aberration enabling provision of a lens the performance of which is equivalent to a refractive lens with a higher Abbe number.

Abstract: The invention provides a method for producing tinted contact lenses in which diffusion of monomer into the colorant is aided by heating of the molds. The invention provides a method, and lenses produced by that method, that reduces the residual, unbound polymer on the lens surface and lens surface roughness.

Abstract: The present provides deformable molds and methods for manufacturing ophthalmic lenses using deformable molds. The molds of the invention may be used in the custom manufacture of ophthalmic lenses.

Abstract: The invention provides methods for designing lenses useful for correcting astigmatism in which there is a progressive cylinder power. The lens of the invention permits the cylinder power to act under low luminance situations to a different extent than in higher luminance situations eliminating the need for extra toric minus power that may interefere near vision at mid range luminances while assisting distance vision at low luminance conditions.

Abstract: Defocus and astigmatism compensation methods and apparatuses for use in an aberration measurement system. The apparatuses including reflectors for altering the optical distance between a pair of lenses passing a wavefront without changing the physical distance between the lenses, thereby compensating for defocus in the wavefront; and cylindrical mirrors for adding and removing curvature from a curved wavefront, thereby compensating for astigmatism in the wavefront. The methods including passing a wavefront having defocus through a first lens on a first path, reflecting the wavefront from the first path to a second path, reflecting the wavefront from the second path to a third path, and passing the wavefront through a second lens as a defocus compensated wavefront; and passing a wavefront through first and second cylindrical lens, and orienting the first and second cylindrical lenses with respect to the wavefront and to one another to compensate for astigmatism in the wavefront.

Abstract: The present provides progressive addition lens designs and lenses in which unwanted lens astigmatism is reduced as compared to conventional progressive addition lenses. The lenses of the invention containing at least one surface that is a composite of a progressive surface design and a regressive surface design.

Abstract: The present invention provides intra ocular lenses that have a refractive index gradient. Additionally, the lenses of the invention may be customized to correct the ocular wave front aberrations of a particular individual.

Abstract: The present invention provides photochromic oxazine compounds and methods for their manufacture, which compounds are useful as photochromic compounds. The compounds of the invention have aromatic substituents on the 2 position of the oxazine moiety.

Abstract: The present invention provides methods and compositions for producing lenses by casting. The processes utilize a two-stage, ultraviolet cure to provide a fast and reliable method for producing ophthalmic lenses.

Abstract: The invention provides methods for designing contact lenses in which method the thickness in the lens periphery is precisely controlled.

Abstract: The invention provides multifocal ophthalmic lenses that have zones of more than one optical power, or focal length. The lenses correct for high order optical aberrations in more than one field of gaze.

Abstract: 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.

Abstract: The invention provides correction of wavefront aberrations of the eye that take into account fluctuations in the aberrations due to biophysical rhythms. Correction is provided for an intermediate value of these fluctuations of the wavefront aberrations. This intermediate value is determined by extrapolating a wavefront measurement to predict the overall variation. The final correction is determined using a weighting scheme derived from the clinical comparisons of the frequency and amplitude components of the variations.

Abstract: The present invention provides indolinospiropyran compounds and methods for their manufacture, which compounds are useful as photochromic compounds. The compounds of the invention are substituted on the indole ring with succinimide, which substitution permits ring opening of the succinimide and modulation of the bulk and photochromic properties of the compounds. The compounds may be conveniently prepared using the solid phase organic synthesis of the invention.

Abstract: The invention provides lenses that have zones of more than one optical power, or focal length, and a smooth transition between the zones of differing power.

Abstract: 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.

Abstract: Stabilized contact lens are provided in which the stabilization zones are obtained by using spline or polynomials to describe one or more peripheral portions of a surface of the lens. The lens' stabilization zones are smoothly integrated into the lens providing a lens that is both effectively stabilized on the eye and comfortable for the lens wearer.

Abstract: Contact lenses that have a back edge designed so that the flat portion of the edge does not rest on the wearer's conjunctiva are provided. The lenses of the invention exhibit good lens handling as well as excellent on-eye comfort and movement.

Abstract: The invention provides compositions for producing lenses by casting. The compositions are useful in producing ophthalmic lens by casting of a surface or layer onto a preform.

Abstract: The invention provides molds useful for the production of lenses with contoured edges. In particular, the molds permit production of a lens with an edge shaped to avoid its impingement on the lens wearer's conjuntival membrane.