Abstract: Apparatus and method for subjectively refining a corrective prescription based on feedback from a patient. Subjective refinement of a corrective prescription is accomplished by measuring aberrations of a wavefront emanating from the eye, computing a proposed corrective prescription based on the measured aberrations presenting to the patient an image reflecting the proposed corrective prescription, and varying the proposed corrective prescription based on feedback from the patient through an input device coupled to the processor to obtain the preferred corrective prescription.

Abstract: The present invention provides methods for designing contact lenses and lenses produced by those methods. The optical properties of the lens of the invention provide visual acuity correction for the wearer and, at the same time, compensates for print-through.

Abstract: 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.

Abstract: 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.

Abstract: A system for determining the presence and optionally the position of an ophthalmic product such as a contact lens in a container is provided.

Abstract: A method and apparatus for measuring with a single device both the aberrations introduced by an eye and the topography of the cornea of the eye. The method includes determining aberrations within a wavefront created by reflecting a beam off the retina of an eye, determining the corneal topography of the eye from a pattern reflected by the cornea, and directing the beam, wavefront, and reflected pattern using a combiner/separator. The apparatus includes a source for generating the beam for producing the wavefront exiting the eye and a first imaging device for receiving the wavefront to determine aberrations, a projector for projecting the pattern onto the cornea for reflection by the cornea and a second imaging device for receiving the reflected pattern to determine corneal topography, and a combiner/separator for directing the beam, wavefront, and reflected pattern.

Abstract: A method and system for inspecting ophthalmic lenses using absorption where an ophthalmic lens is illuminated with light comprising wavelengths that are substantially absorptive to said lens, the image subsequently detected being created using only light at said absorptive wavelengths. Variations in transmitted light intensity translate into thickness changes in the lens caused by cosmetic flaws. The invention is also directed to imaging lens assemblies employing highly positive-powered field flattening lens elements to image a curved object, such as an ophthalmic lens, onto a flat image plane.

Abstract: Apparatus and method for subjectively refining a corrective prescription based on feedback from a patient. Subjective refinement of a corrective prescription is accomplished by measuring aberrations of a wavefront emanating from the eye, computing a proposed corrective prescription based on the measured aberrations presenting to the patient an image reflecting the proposed corrective prescription, and varying the proposed corrective prescription based on feedback from the patient through an input device coupled to the processor to obtain the preferred corrective prescription.

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: A system for determining the presence and optionally the position of an ophthalmic product such as a contact lens in a container is provided.

Abstract: Apparatuses and methods for improving aberration determination capabilities, providing corrective prescription verification, and allowing binocular vision correction in ophthalmic wavefront measuring devices. (1) Improved aberration determination capabilities are achieved through input beam modification which includes sensing an image in a wavefront emanating from an eye in response to an input beam with a sensor and then modifying the input beam with an adaptive optical device based on the sensed information. (2) Corrective prescription verification includes modifying an image with an adaptive optical element to produce a corrected image at the patients eye. (3) Binocular vision correction for a pair of eyes includes measuring the aberrations of one eye with a first ophthalmic wavefront measuring device and measuring the aberration produced by the other eye with a second ophthalmic wavefront measuring device substantially simultaneously.

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: 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: A method and system for inspecting ophthalmic lenses using absorption where an ophthalmic lens is illuminated with light comprising wavelengths that are substantially absorptive to said lens, the image subsequently detected being created using only light at said absorptive wavelengths. Variations in transmitted light intensity translate into thickness changes in the lens caused by cosmetic flaws. The invention is also directed to imaging lens assemblies employing highly positive-powered field flattening lens elements to image a curved object, such as an ophthalmic lens, onto a flat image plane.

Abstract: A system for determining the presence and optionally the position of an ophthalmic product such as a contact lens in a container is provided.

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: A system for determining the presence and optionally the position of an ophthalmic product such as a contact lens in a container is provided.

Abstract: A system and method is provided for integrating corneal topographic data and ocular wavefront data with primary ametropia measurements to create a soft contact lens design. Corneal topographic data is used to design a better fitting soft contact lens by achieving a contact lens back surface which is uniquely matched to a particular corneal topography, or which is an averaged shape based on the particular corneal topography. In the case of a uniquely matched contact lens back surface, the unique back surface design also corrects for the primary and higher order optical aberrations of the cornea. Additionally, ocular wavefront analysis is used to determine the total optical aberration present in the eye. The total optical aberration, less any corneal optical aberration corrected utilizing the contact lens back surface, is corrected via the contact lens front surface design.

Abstract: A system for determining the presence and optionally the position of an ophthalmic product such as a contact lens in a container.