Abstract: A thin intraocular lens for inhibiting posterior capsular opacification (PCO) includes an optic having an anterior concave region, a posterior concave region, a sharp edge which extends posteriorly and between the posterior concave region and at least a portion of an outer-most peripheral edge surface.

Abstract: In an embodiment, an aspheric IOL for use in a pseudophakic ocular system has no inherent spherical aberration. An embodiment of the invention is directed to a family of aspheric IOLs in which a lens constant, such as the well known A-constant, is kept constant throughout the family of lenses. An embodiment of the invention is directed to a multi-component accommodating intraocular lens (A-IOL) having substantially no inherent spherical aberration. An embodiment of the invention is directed to a family of member A-IOLs where each member A-IOL has a first (1) surface and a fourth (4) surface characterized by a radius and a conic constant that remain substantially constant over the power rage of the A-IOL family.

Abstract: An apparatus for measuring a subject's cornea having a mask subsystem disposed in a path of light from the light source, the mask subsystem configured to produce a segmented slits of the light.

Abstract: A method and apparatus for remotely verifying the calibration status of a diagnostic instrument, for example, following remote installation of a software upgrade on the instrument. In one example, a method of verifying the calibration status of the instrument, includes retrieving stored raw calibration test data generated during a previously-performed calibration of the instrument, processing the raw calibration test data to generate a diagnostic reading, comparing the diagnostic reading to a known nominal reading, and based on the comparison, generating an output indicative of the calibration status of the instrument. In one example, the method is performed without contemporaneously measuring a calibration object with the instrument and therefore, without activating the measurement head or measurement optics of the instrument.

Abstract: An IOL injector kit comprising a first body portion having a first lumen disposed therethrough, a proximal end, a distal end configured to deposit an IOL into an eye, a second body portion having a second lumen disposed therethrough, a proximal end and distal end, a container comprising a wall defining a container lumen, a first open end configured to receive the proximal end of the first body portion into the container lumen, and a second open end configured to receive the distal end of the second body portion into the container lumen, and an IOL disposed inside said container.

Abstract: Methods and apparatus for facilitating determination of centroids of image spots in an image containing an array of image spots generated by an aberrometer, the image comprising a first plurality of pixels each pixel having a corresponding intensity value, the method comprising calculating an average intensity value for a second plurality of pixels in a perimeter around a pixel, the average calculated using a subset of the second plurality exclusive of at least a portion of the pixels in the perimeter.

Abstract: An intraocular lens for inhibiting posterior capsular opacification, or secondary cataract, includes an optic having a periphery provided with at least two sharp edges which lie radially spaced from each other with respect to the optical axis of the lens optic.

Abstract: An optical system calibration system and method particularly suited for calibrating the optical slit planes in an ophthalmic diagnostic instrument. The system includes an illumination source projector, an illumination image receiver, and a calibration component all having known relative positions, orientations and physical and optical characteristics. The calibration component includes at least two separated, diffusely reflecting surfaces. Images of an exemplary slit illumination pattern projected onto the calibration component and formed on the diffusely reflecting surfaces are detected by the image receiver such as a video camera. Based upon camera image coordinates and triangulation parameters of the projector, the receiver, and the calibration component, the slit image positions on the image detector plane can be calibrated to the axially displaced, diffusely reflecting calibration component surface positions.

Abstract: A flow measurement device 100 is provided that includes an electrode terminal chamber 102 with an inlet 104 in communication with a flow channel 108 for receiving fluid and viscoelastic material aspirated from a surgical site, and an outlet 106 that tapers into a flow channel 108. The outlet 108 has a taper angle that is sufficient to smooth flow and cause viscoelastic material entering the electrode terminal chamber 102 to flow substantially within a center portion of the chamber and through the outlet 106. The electrode terminal chamber 102 further includes first and second electrode terminals 130 and 140 disposed on generally opposite sides of the electrode terminal chamber 102 in a spaced-apart manner. The first and second electrode terminals 130 and 140 are positioned a distance from the center of the chamber 102 that is sufficient to substantially avoid contact between the terminals and viscoelastic materials flowing through the chamber 102.

Abstract: A flow control device includes a housing having a motor chamber and a pump chamber. The motor chamber has an outlet for communication with a fluid collection device, and an inlet for communication with an aspiration line through which fluids are delivered into the motor chamber. First and second motor rotors are rotatably disposed in a flow path between the inlet and the outlet in the motor chamber, and a drive shaft is coupled to the first motor rotor. The pump chamber has an outlet for infusing fluid to a surgical site, and an inlet through which infusion fluids are delivered into the pump chamber. First and second pump rotors are rotatably disposed in a flow path between the inlet and the outlet in the pump chamber, where the first pump rotor is coupled to the drive shaft. The drive shaft drives the pump rotors at the same speed as the motor rotors, such that any surge in aspiration flow induces a similar surge in infusion flow.

Abstract: An interferometric axial eye length measurement apparatus having a light source adapted to produce a beam of partially coherent light, a first mirror and a second mirror disposed in the reference arm, and a processor adapted to control at least the second mirror such that a corneal interference peak and a second interference peak have a non-zero separation. There is at least one variable delay optical element having a delay signal, wherein the delay signal corresponding to a region between the corneal interference peak and second interference peak is substantially linear.

Abstract: An air bubble separator is provided for ophthalmic surgical systems, which includes a housing 102 having a diagonally-oriented flow channel 110 and a vertically-oriented flow channel 130 adjoining the diagonally oriented channel. The diagonally-oriented flow channel 110 has a downstream portion 112 disposed downstream of the vertically-oriented flow channel 130, and an upstream portion 118 disposed upstream of the vertically-oriented flow channel 130. The downstream portion 112 of the diagonally-oriented flow channel 110 has a cross-sectional area 114 that is greater than that of the upstream portion 118. The downstream portion's cross-sectional area 114 is greater than the upstream portion's cross-sectional area 124 by an amount or percentage that is sufficient to slow fluid flow through the diagonally-oriented flow channel 110, so as to cause air within the fluid to rise and flow into the vertically-oriented flow channel 130.

Abstract: A fast algorithm is presented which allows for substantially simultaneous acquisition, analysis, and display of a wavefront centroid image, referred to as online aberrometry. A method embodiment involves determination of an average, or most frequently occurring, wavefront aberration over a selected time interval, e.g., 20 sec. Online pupil diameter measurement allows analysis of wavefront aberration as a function of changing pupil size. A wavefront measuring apparatus is disclosed that supports online aberrometry.

Abstract: An ophthalmic illumination system includes planar shapes serially positioned in a path for a collimated beam, along an optical axis. The shapes are rotationally symmetric with one another relative to the optical axis. Each shape has a central rotational axis intersecting the optical axis. Generally wedge-shaped segments of the shapes are spaced apart around and converge at the optical axis to provide generally wedge-shaped apertures to the beam between the segments. The shapes are rotatable on the rotational axes along the optical axis to assume a plurality of configurations to vary intensity of the beam. The beam can fill spatial modes at substantially all radii of the optical fiber entrance pupil.

Abstract: An apparatus for measuring a subject's cornea, comprising (A.) a slit projection subsystem comprising a light source, (B.) a mask subsystem disposed in a path of light from the light source, comprising a first slit mask defining a plurality of apertures, (C.) a movement apparatus adapted to move at least a portion of the slit projection subsystem, the movement apparatus configured and arranged such that, by moving the portion of the slit projection subsystem, portions of the light can be selectively transmitted through an aperture of the plurality of apertures toward the cornea, (D.) an imaging element configured and arranged to image at least one of the plurality of apertures onto the cornea, and (E.) an image capture subsystem arranged to capture images of the portions of light after the light impinges on the cornea.

Abstract: An ophthalmic lens, comprising an optic including at least one photochromic region having a first chromaticity and a second region of lesser photochromaticity. A method of treating a subject having presbyopia or aniridia comprising applying to the subject's eye an ophthalmic lens comprising an optic including at least one photochromic region having a first chromaticity and a second region of lesser photochromaticity.

Abstract: An apparatus for determining a position of a subject's cornea, comprising a camera, a first illumination apparatus adapted to provide a first beam of light and a first diffuse portion of light that are coincident, and a second illumination apparatus adapted to provide a second beam of light and a second diffuse portion of light, that are coincident. In some embodiments, the first, second, third and fourth images are disposed on the midpoints of a square, when a cornea is located along an optical axis of camera.

Abstract: A process and an enabling system and associated devices are directed to automatically and positively identifying a person based upon a matching comparison between a stored, historical iris recognition-based record and a contemporaneously obtained record. The algorithm involves identifying anchor features in selected regions of an iris image and mapping an iris pattern associated with the anchor features into a topologically consistent flat analysis space. Analysis according to the invention generates historical (reference) and contemporaneous Iris Feature Vectors for individuals upon which matching comparisons can be made to positively identify an individual from the reference base.

Abstract: A preloaded intraocular lens injection device includes a retainer for releasably holding an IOL in an unstressed state. The retainer and IOL are removably attached to an injector body and are sealed in the same package for delivery to a surgeon. In an alternate embodiment, the retainer and IOL are coupled together and sealed in one package and the injector body is sealed in a separate package with the surgeon attaching the retainer to the injector body at the time of surgery. To deliver the IOL through the injector body, the retainer is removed from the injector body causing the IOL to release from the retainer and become located in an unstressed state in the injector body.

Abstract: A preloaded intraocular lens injection device includes a retainer for releasably holding an IOL in an unstressed state. The retainer and IOL are removably attached to an injector body and are sealed in the same package for delivery to a surgeon. In an alternate embodiment, the retainer and IOL are coupled together and sealed in one package and the injector body is sealed in a separate package with the surgeon attaching the retainer to the injector body at the time of surgery. To deliver the IOL through the injector body, the retainer is removed from the injector body causing the IOL to release from the retainer and become located in an unstressed state in the injector body. A compressor is moved to the closed position to compress the IOL, the injector tip is inserted through a small incision in an eye and a plunger is advanced to push the IOL through and out the injector body tip and into an eye.