Abstract: Systems and methods for non-invasively assessing ciliary muscle accommodative potential in phakic eyes may include receiving a plurality of signals generated by a plurality of bipolar electrodes during a ciliary muscle assessment procedure, each of the plurality of signals indicating an electrical field associated with a patient's ciliary muscle, and analyzing the signals to evaluate the patient's ciliary muscle accommodative potential.

Abstract: Systems and methods for non-invasively assessing ciliary muscle accommodative potential in phakic eyes may include receiving a plurality of signals generated by a plurality of bipolar electrodes during a ciliary muscle assessment procedure, each of the plurality of signals indicating an electrical field associated with a patient's ciliary muscle, and analyzing the signals to evaluate the patient's ciliary muscle accommodative potential.

Abstract: A system for optimizing the effects of light sources on viewing and image processing, and for imaging an illuminated object takes advantage of the fact that specularly reflected light has particular polarization properties compared with diffusely scattered light. The system includes a polarized light source to illuminate an object with a polarized beam and an unpolarized light source for delivering unpolarized light to illuminate the object with an unpolarized beam. A detector is positioned to receive light from the beams reflected from the object. A polarizer is oriented for substantially filtering out specular reflection from the object and for permitting at least a portion of diffuse reflection from the object to pass therethrough. The polarized and unpolarized light sources and the polarizer are controllable for selectively illuminating the object with and detecting light having a selected polarization characteristic as a function of a portion of a procedure being performed.

Abstract: A system and method for determining an optimal position of an eye relative to an ophthalmic device are disclosed. One embodiment of the method includes receiving data comprising an image of a surface of an eye with the eye at a first position relative to an ophthalmic device. An edge feature in the image is located, and a sharpness calculation on the edge feature is performed using a predetermined algorithm to yield a sharpness value. The eye surface is then adjusted to a second position relative to the ophthalmic device, and the previous steps are repeated until the sharpness value is maximized, which is an indication that an optimal eye position has been achieved. An embodiment of the system includes a processor and a software package executable by the processor, the software package adapted to perform the calculations as above. Means are also provided for adjusting the eye surface to a second position relative to the ophthalmic device.

Abstract: A system and method for determining a lateral position of an eye relative to an ophthalmic device are disclosed. One embodiment of the method includes receiving data comprising an image of a surface of an eye. An edge feature in the image is located, wherein the edge feature is in a known relationship to a pupil of the eye. The image is mapped from the edge feature to laterally define the pupil, and a center of the pupil is determined using the pupil definition. The pupil center comprises a location from which to achieve a preferred lateral eye position relative to an ophthalmic device. An embodiment of the system of this invention can include a processor and a software package executable by the processor, the software package adapted to cause the processor to carry out the method steps.

Abstract: A method for performing wavefront-guided laser surgery on a cornea includes the step of calculating a corneal flap configuration based upon collected anatomical information on an eye and wavefront data on a cornea of the eye. Such data may be collected by, for example, an aberrometer, although this is not intended as a limitation. The calculated configuration is transmitted to a processor in controlling relation to a corneal flap-cutting device. The flap-cutting device is used to create a corneal flap based upon the calculated configuration. A system for performing wavefront-guided laser surgery on a cornea includes a processor for receiving the anatomical information and wavefront data. A software package is adapted to calculate the corneal flap configuration and to control a corneal flap-cutting device to cut a corneal flap commensurate with the calculated corneal flap configuration.

Abstract: Systems and methods for tracking eye movement includes directing an incident light beam onto each facet of a pyramidal prism to produce a plurality of beams that form a plurality of light spots, at least two of the light spots having different diameters. The prism is translatable to effect a change in spacing of the light spots. Intensities of light reflected from the light spots is used to retain the light spots upon a pupil/iris boundary. A relative intensity of the spots indicates a change in pupil size. A second light spot positioned on a predetermined eye sector can also be used to calculate a pupil characteristic and an environmental effect on light received from the eye.

Abstract: An orientation method for corrective eye surgery that registers pairs of eye images taken at different times and with the patient in different positions includes retrieving reference digital image data on an eye of the patient, including image data on an extracorneal eye feature. Real-time image data are collected that include image data on the extracorneal eye feature. A combined image is displayed of a superposition of the data sets, and a determination is made as to whether the combined image indicates an adequate registration between them based upon the extracorneal eye feature data in the two data sets. If the registration is not adequate, one of the data sets is manipulated until an adequate registration is achieved. A system is directed to apparatus and software for orienting a corrective program for eye surgery.

Abstract: A system and method for tracking ocular changes during a surgical procedure include directing an eye-safe optical beam toward an undilated, unparalyzed eye. A reflected optical beam is detected, and measurements are performed based upon data contained in the reflected optical beam of at least one geometric parameter of the eye at a predetermined frequency, and from them is calculated a change in the at least one geometric parameter. The calculated change is used to dynamically adjust the directing of laser beam shots during the surgery.

Abstract: A method for enhancing vision of an eye includes a laser delivery system having a laser beam for ablating corneal material from the cornea of the eye. Measurements are made to determine an optical path difference between a plane wave and a wavefront emanating from the retina of the eye for a location at a surface of the cornea. An optical correction is provided to the laser delivery system for the location based on the optical path difference and refractive indices of media through which the wavefront passes. The optical correction includes dividing the optical path difference by a difference between an index of refraction of corneal material and an index of refraction of air. The laser beam is directed to the location on the surface of the cornea and corneal material ablated at the location in response to the optical correction to cause the wavefront to approximate the shape of the plane wave at that location.

Abstract: A method for enhancing vision of an eye includes a laser delivery system having a laser beam for ablating corneal material from the cornea of the eye. Measurements are made to determine an optical path difference between a plane wave and a wavefront emanating from the retina of the eye for a location at a surface of the cornea. An optical correction is provided to the laser delivery system for the location based on the optical path difference and refractive indices of media through which the wavefront passes. The optical correction includes dividing the optical path difference by a difference between an index of refraction of corneal material and an index of refraction of air. The laser beam is directed to the location on the surface of the cornea and corneal material ablated at the location in response to the optical correction to cause the wavefront to approximate the shape of the plane wave at that location.