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.
This application is a continuation-in-part of U.S. Ser. No. 09/524,312, filed Mar. 13, 2000, and which is hereby incorporated by reference herein in its entirety.
A system and method combining wavefront analysis with narrow-beam scanning photoablation where optimal corneal topography is first calculated then followed by real-time topographic feedback controlled photoablation. Eye movement and beam position sensing to within a tolerance of 5 .mu.m are provided by high speed digital computation in conjunction with specialized charge coupled devices. Lasers of three different wavelengths--one low-powered pulsed ultraviolet, a second continuous visible band type, and a pulsed infrared type are combined together into narrow beams whereupon a scanning mechanism generates coaxial collimated beams for the functions of ablation, beam position sensing, and fundus spot imaging. Transepithelial ablation is performed utilizing the same CCD used for wavefront analysis by switching between two dichroic mirrors. The light source for the raster videokeratography topography means is the UV laser used for ablation.
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.
A customized corneal profile is provided by combining corneal topography data with captured wavefront aberration data to form a course of refractive treatment of the eye. In one embodiment, the captured wavefront data is employed within the area of a pupil, while the corneal topography data is employed in the area outside of the pupil. In other embodiments, the topography data is adjusted based on the wavefront data, a course of refractive treatment is simulated and displayed upon the topography data, and an initial evaluation of the suitability of a patient for treatment is performed based on the topography data.
The invention relates to a device for the three-dimensional representing of an operative field, especially of an eye, during laser operations. The inventive device comprises a three-dimensional recording system, an image processing system and a three-dimensional display unit.
A method for optimizing a prescription for laser-ablation corneal treatment achieves the modification of wavefront-based refractive correction data with the use of user/doctor-input nomograms. Data comprising a wavefront description of a patient eye are received and displayed to a user, who can then make modifications to these treatment data. A modification is calculated based upon the desired correction to yield corrected wavefront description data, which are displayed to the user. A system includes a processor and a device for transmitting a wavefront description of a patient eye to the processor. An input device is adapted to receive a desired correction to the wavefront description data. Software is resident on the processor having code segments for implementing the calculations as described.
