Matches 251 - 300 out of 390 < 1 2 3 4 5 6 7 8 >
Match Document Document Title
6036683 Process and apparatus for changing the curvature of the cornea  
A process is described for changing the curvature of the cornea in which the light of a light source is focused in the cornea with a wavelength of approximately 1.5 μm to 6 μm so that the...
6027494 Ablatement designed for dark adaptability  
A system and method for performing a reshaping of a cornea of an eye for improved vision is presented. The system comprises a first appartus for determining dark adapted pupil size of an eye and a...
6010497 Method and apparatus for controlling scanning of an ablating laser beam  
A laser beam delivery system and a method for ablating tissue, e.g., for reshaping a cornea of an eye is provided. The laser beam delivery system directs a laser beam on the tissue to be ablated in...
5997529 Compound astigmatic myopia or hyperopia correction by laser ablation  
An apparatus is provided for performing corneal refractive surgery by ablating a portion of a corneal surface of an eye. The apparatus includes a pulsed laser for producing a pulsed output beam of...
5993441 Control of photorefractive keratectomy  
A method and system are described for performing photorefractive keratectomy procedure employing pulses of photoablative radiation to selectively ablate corneal tissue of a patient's eye in an...
5993438 Intrastromal photorefractive keratectomy  
A method for performing intrastromal photorefractive keratectomy in the cornea of an eye, using a pulsed, laser beam to photodisrupt a portion of the cornea, includes the initial step of focusing...
5984916 Ophthalmic surgical laser and method  
A laser-based method and apparatus for corneal and intraocular surgery. The preferred method of performing a surface ablation of cornea tissue or other organic materials uses a laser source which...
5975084 Method for surgically achieving minimum astigmatism measured refractively and topographically  
A method of surgically treating an eye of a patient to correct astigmatism in which values of astigmatism are measured topographically and refractively, and limit values of targeted induced...
5941874 Simulating a laser treatment on the eye by pretreating a contact lens  
A technique and apparatus are provided for simulating a laser treatment on the eye by pretreating a contact lens. A proposed laser treatment is developed using a patient's eye data. That laser...
5938656 Process and device for correcting the shape of a lens  
In order to render possible the ablation to different depths in a process for correcting the shape of a lens in which the surface of the lens is acted upon by the radiation of a pulsed radiation...
5928221 Fluence monitoring method for laser treatment of biological tissue  
Fluence monitoring apparatus is disclosed for a system for modifying curvature of a cornea by selective laser photoablation of corneal tissue by means of a succession of pulses of laser radiation...
5906608 Ablation apparatus  
An ablation apparatus for ablating only a convex part on a rough surface efficiently in a short time, providing a light delivering optical system for delivering a laser beam being a slender from a...
5904678 Multizone, multipass photorefractive keratectomy  
A multizone, multipass photorefractive keratectomy (MP-PRK) technique to treat 315 eyes with the 193-nm VISX 20/20 excimer laser. The procedure includes making multipass ablations that increase in...
5895384 Device for shaping the cornea  
A device for shaping the cornea of an eye, including a laser (1), the laser beam of which has a circular mode of distribution, and a beam-shaping device and a beam-guiding device, which direct the...
5891131 Method and apparatus for automated simulation and design of corneal refractive procedures  
A technique for automated design of a corneal surgical procedure includes topographical measurements of a patient's eye to obtain corneal surface topography. Conventional techniques are used to...
5865830 Noncontact laser microsurgical apparatus  
A noncontact laser microsurgical apparatus and method for marking a cornea of a patient's or donor's eye in transplanting surgery or keratoplasty, and in incising or excising the corneal tissue in...
5849006 Laser sculpting method and system  
A method and system are provided for eroding or ablating a shaped volume of an eye's corneal tissue in accordance with the treatment of a specified eye condition. To determine the laser beam shot...
RE35974 Method for corneal curvature variations  
A method for refractive correction of the eye in order to improve the vision of the eye while not adversely affecting its natural asphericity is described. The method involves determining the...
5843070 Simulating corneal laser surgery  
An apparatus and method are provided for simulating a predicted post-operative topography of a cornea of an eye based on a pre-operative topography of the cornea and a proposed laser ablation...
5827264 Method of controlling apparatus for modifying the surface of the eye through large beam laser polishing  
A apparatus and method for controlling an apparatus for removing tissue from the eye performs various types of corrections using a relatively large beam, but oscillating, or dithering, that being...
5806530 Method for altering the pupil of an eye  
A method for altering the pupil of an eye is shown. The method comprises the step of surgically performing an iridectomy superiorly to the natural pupil of an eye forming a superior accessory pupil...
5807379 Ophthalmic method and apparatus for laser surgery of the cornea  
The invention contemplates a method for making a disposable element adapted for selective placement in the path of laser beam delivery to the cornea. The element carries a membrane of uniform...
5807380 Optical guide and method for use in corrective laser eye surgery  
An optical guide dispenses laser light that is incident outside a selected region during laser eye surgery. The guide is formed as a body with a passageway of selected geometrical cross-section...
5803923 Presbyopia correction using a protected space pattern, methods and apparatus  
A zone of increased curvature is produced in the inferior lower quadrants of the cornea FIG. 1 (5). This zone produces a "plus effect" FIG. 2 (5) which leads presbyopia patients to be able to read...
5795351 Laser refractive surgery station  
A surgery station is provided for refractive eye surgery by laser photoablation, with the patient in a normal and comfortable upright seated position. The surgery station comprises a head support...
5782822 Method and apparatus for removing corneal tissue with infrared laser radiation  
A surgical technique for removing corneal tissue with scanned infrared radiation is disclosed which utilizes short mid-infrared laser pulses to provide a tissue removal mechanism based on...
5779696 Method and apparatus for performing corneal reshaping to correct ocular refractive errors  
A noninvasive method is described for performing accurate and controlled reshaping of the anterior surface of the cornea in order to correct ocular refractive errors such as myopia...
5772656 Calibration apparatus for laser ablative systems  
A calibration apparatus is disclosed for measuring the properties of a laser beam. The apparatus includes a photoreactive element having a composition which reacts with laser radiation in a manner...
5752950 System for automatically inhibiting ophthalmic treatment laser  
A system is provided for use with an ophthalmic treatment laser that produces a treatment laser beam. The system automatically inhibits transmission of the treatment laser beam when a threshold...
5749867 Method of analysing astigmatism and apparatus for performing corneal surgery  
A method of analyzing astigmatism is disclosed which enables surgeons to ascertain what surgery may be required subsequent to initial surgery to achieve the preoperative aim of the initial surgery....
5749871 Method and apparatus for modifications of visual acuity by thermal means  
A thermokeratoplasty system and method for locally heating and reshaping a cornea in a manner that produces a minimal regression of the corneal correction. The system includes a probe that is...
5741245 Corneal sculpting using laser energy  
A corneal sculpting system utilized for performing surgery to reshape the cornea of the eye. The system includes a laser delivery system that is coupled to a filter positioning system and a corneal...
5742626 Ultraviolet solid state laser, method of using same and laser surgery apparatus  
A solid state laser system producing coherent radiations at deep ultraviolet wavelengths includes a solid state laser producing a first beam having a wavelength near 1 micron. The 1 micron beam is...
5742426 Laser beam treatment pattern smoothing device and laser beam treatment pattern modulator  
A laser beam pattern modulator includes a light-transmissive, light-refractive element for rotating and/or linearly displacing the beam such that the refracted beam remains parallel to the incident...
5735843 Laser surgery apparatus and method  
An argon-fluoride excimer laser or other laser source capable of generating far-ultraviolet radiation at 193 nm is pulsed with energy densities of greater than 20 mj per cm 2 at a repetition rate...
5723142 Method for masking the cornea  
A method of masking the cornea of an eye during surgical application of laser energy by forming an ablatable mask on the eye.
5713893 Test substrate for laser evaluation  
A test substrate for the calibration of a laser used in ophthalmologic surgery. The test substrate is formed from a homogenous, relatively anhydrous material that ablates a rate approximately that...
5685998 Method of minimizing diffraction groove formation on laser etched surfaces  
Laser radiation can be directed through an aperture to a target surface without causing the expected diffraction groove effect by moving the target relative to the stage to which the aperture is...
5651784 Rotatable aperture apparatus and methods for selective photoablation of surfaces  
Apparatus and methods to modify the intensity distribution of a beam of radiation, such as a laser, and for eroding surfaces with predetermined shapes. A rotatable mask is formed with one or more...
5649943 Ophthalmic treatment apparatus and its use  
An ophthalmic method and apparatus preferably for removing the relatively soft cellular epithelium from a predetermined region of the relatively hard fibrous cornea of the eye preparatory to...
5647865 Corneal surgery using laser, donor corneal tissue and synthetic material  
Laser ablation is applied to a patient's cornea in a circumscribed fashion, while controlling energy flux, beam exposure diameter and exposure time to achieve removal of a central corneal disc of...
5642287 Sculpturing device for laser beams  
A system and device for sculpturing a laser beam along a laser axis to a target upon command using a device between the laser source and the target. The device includes an adjustable iris aperture...
5637109 Apparatus for operation on a cornea using laser-beam  
An apparatus for ablating the surface of the cornea using a laser beam to correct the refractive of an eye to be operated having a laser source for emitting a laser beam having a non-uniform...
5634919 Correction of strabismus by laser-sculpturing of the cornea  
The present invention consists of methods and apparatus for laser ablation of the cornea to correct strabismus. The laser beam is controlled by a system of limiting shutters to cut prism lenses...
5634920 Method and apparatus for removing epithelium from the surface of the eye  
A apparatus and method for controlling an apparatus for removing tissue from the eye performs various types of corrections using a relatively large beam, but oscillating, or dithering, that being...
5630810 Method of ophthalmological surgery  
An improved method of ophthalmological surgery is disclosed. The method is used to change the optical characteristics of an eye through subjecting the eye's cornea to ultraviolet irradiation...
5624437 High resolution, high speed, programmable laser beam modulating apparatus for microsurgery  
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....
5624436 Laser beam and ablating apparatus and related method  
An ablation apparatus for ablating by laser beam including a laser beam providing means for providing laser beam to ablate an object to be processed into a desired form, a light beam delivering...
5618284 Collagen treatment apparatus  
A method and apparatus for controlled thermal shrinkage of collagen tissue by irradiation with coherent energy in the wavelength band of 1.80 to 2.55 microns as generated by a laser. A specific...
5613965 Corneal reprofiling using an annular beam of ablative radiation  
Methods and systems are disclosed for corneal reprofiling employing an annular beam of ablative radiation to correct refractive errors in vision, and/or create "blend zones" in order to reduce any...
Matches 251 - 300 out of 390 < 1 2 3 4 5 6 7 8 >