Memphis Eye & Cataract Associates Ambulatory Surgery Center

Other

Memphis Eye & Cataract Assoc.

Memphis Eye & Contact Associates

Roy E Williams

Jerre M Freeman

James F Freeman

Brian M Callies

Jack H Davis

William R Clayton

David E Thomas

Carl E Halford

William T Harrell

Ronald G Driggers

A UV-transmissable window assembly for a DMD device includes a UV-transmissable glass window provided in a frame. The window and frame are bonded together to preferably effect a hermetic seal therebetween. Optical coatings specific to the intended wavelength of light transmission are applied to the inner and outer surfaces of the glass window to reduce reflection and increase light transmission therethrough. The window assembly, and DMD provided with the same, is adapted for excellent transmission of ultraviolet light, even at the deep ultraviolet portion of the spectrum. The DMD window assembly has application in the medical arts, both surgery and device manufacture, in the production of integrated circuits (IC), and in other optical lithography applications, among other fields.

Digital micromirror device having a window transparent to ultraviolet (UV) light

A self-contained illumination device for illuminating medicine container labels in low-light level conditions is provided. The illumination means includes a light source component for illumination, an electrical switch component to control the light source, supporting circuitry components to energize the light source, and a housing structure for supporting and enclosing the components, directing the illumination to the label, and coupling the illumination device to a medicine container receptacle or a conventional medicine container cap.

Self-contained illumination device for medicine containers

A laser eye surgery system and method include a laser for producing a laser beam capable of making refractive corrections, an optical system for shaping and conditioning the laser beam, a digital micromirror device (DMD) for reflecting the shaped and conditioned beam toward the eye, and a computer system for controlling the mirrors of the DMD. The computer system and methodology utilize a higher order polynomial equation to generate a smooth refraction correction profile and determines the coefficients for the higher order polynomial equation from preferably first-, second-, or third-order curves based on the correlation between the coefficients and the desired diopter correction.

System for generating ablation profiles for laser refractive eye surgery

An automated eye corneal striae detection system for use with a refractive laser system includes a cornea illuminator, a video camera interface, a computer, and a video display for showing possible eye corneal striae to the surgeon. The computer includes an interface to control the corneal illuminator, a video frame grabber which extracts images of the eye cornea from the video camera, and is programmed to detect and recognize eye corneal striae. The striae detection algorithm finds possible cornea striae, determines their location, or position, on the cornea and analyzes their shape. After all possible eye corneal striae are detected and analyzed, they are displayed for the surgeon on an external video display. The surgeon can then make a determination as to whether the corneal LASIK flap should be refloated, adjusted or smoothed again.

System to automatically detect eye corneal striae

A laser eye surgery system includes a laser for producing a laser beam capable of making refractive corrections, an optical system for shaping and conditioning the laser beam, a digital micromirror device (DMD) for reflecting the shaped and conditioned beam toward the eye, a computer system for controlling the mirrors of the DMD, and an eye tracking system which tracks the position of the eye and provides feedback to the computer system. The computer system includes software which permits the DMD to emulate the patterns and laser beam control provided in all prior art broadbeam systems and scanning spot systems. All that is required is a selection in the software to operate thereunder. Moreover, the laser surgery system can be coupled to or adapted to receive data from corneal topographers or wavefront sensor systems and utilize such data to increase the quality of correction above and beyond prior approaches. Furthermore, the laser surgery system can provide much greater resolution than prior art systems.

Control system for high resolution high speed digital micromirror device for laser refractive eye surgery

A laser eye surgery system includes a laser for producing a laser beam capable of making refractive corrections, an optical system for shaping and conditioning the laser beam, a digital micromirror device (DMD) for reflecting the shaped and conditioned beam toward the eye, and a computer system for controlling the mirrors of the DMD. The computer system utilizes at least one polynomial equation to generate a smooth refraction correction profile.

A laser eye surgery system includes a laser for producing a laser beam capable of making refractive corrections, an optical system for shaping and conditioning the laser beam, a digital micromirror device (DMD) for reflecting the shaped and conditioned beam toward the eye, and a computer system for controlling the mirrors of the DMD. The computer system generates one-bit resolution images corresponding to ablation layers defining a correction for the eye. The images are then transferred to the DMD for appropriate reflection of the laser beam toward the eye such that the shape of the cornea of the eye is corrected.

Method and system for controlling a digital mircomirror device for laser refractive eye surgery

A system and method for performing corneal ablation or reshaping with a laser in order to correct aberrations in the optical system of the eye utilizes a wavefront sensor which defines a wavefront correction for the eye and then, based upon that defined wavefront correction, drives a digital micromirror device (DMD) which modulates a laser beam to the eye to perform the correction. As the DMD is a 2-D array of individually controlled mirrors, and the wavefront sensor analysis can provide a sequence of two dimensional arrays of values which together define the wavefront correction for the eye, the combination of the two produces a method for correcting the corneal surface. The system may be operated in either of two manners to achieve optimum refractive corrections: (1) off-line measurement of the eye optical system via the wavefront sensor followed by DMD-based laser refractive surgery, or (2) real-time measurement of the eye optical system via the wavefront sensor which directs a DMD-based laser refractive surgery system.

Laser eye surgery system using wavefront sensor analysis to control digital micromirror device (DMD) mirror patterns

An eye tracking and positioning system for use with a refractive laser system includes a camera interface, a computer, and a system for moving the patient relative to the laser beam. The computer includes a video frame grabber which extracts images of the eye from the camera, and is programmed to perform an eye tracking algorithm. The eye tracking algorithm calculates the exact center of the eye pupil, and compares the center with the desired location of the laser beam, as determined by a surgeon, with an image processing algorithm. If the relative location of the eye center and the laser beam fall outside a predetermined value, the patient chair, and thereby the patient, is repositioned relative to the laser beam, as opposed to the laser beam being repositioned relative to the patient. The repositioning counters the movement of the eye.

Eye tracking and positioning system for a refractive laser system

A high speed, high resolution, programmable laser beam modulating apparatus includes a computer connected to a high resolution micromirror array having individually addressable and movable mirrors. The computer is also connected to a pulsed laser for controlling the emission thereof. A beam homogenizing optic changes an ablating input beam from the laser into a homogeneous beam having a uniform cross-sectional energy density. The mirrors are movable between an 'on' position for reflecting a portion of the homogeneous beam onto a cornea, and an 'off' position for reflecting the beam away from the cornea. The computer is programmed to move the mirrors to the 'on' position in a series of predetermined patterns, and the remaining mirrors to the 'off' position, and to fire the laser during the presence of each pattern, so that corresponding patterns of tissue on the cornea are successively ablated therefrom. The ablated patterns are overlaid on each other, so that they combine to produce a contour change in the cornea and correct a refractive error thereof.

Growing community of inventors

Collierville, TN, United States of America

Roy E Williams