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5603709 |
Optical refraction correction methods
Laser energy is used to remove all the epithelium from a defined treatment zone on the surface of the cornea by focusing a laser beam on the epithelium and monitoring the vapor produced by ablation...
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5599341 |
Laser surgical procedure and device for treatment of the cornea
This invention is a procedure and system for the correction of optical abnormalities in a hum, a eye. It involves the use of laser radiation to desiccate or ablate tissue in the stromal layer of...
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5569238 |
Energy delivery system controllable to continuously deliver laser energy in performing photorefractive keratectomy
The present invention discloses an optical system for performing a laser photorefractive keratectomy operation on a cornea for vision correction. The optical system comprises a laser source...
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5549597 |
In situ astigmatism axis alignment
An alignment module for determining the astigmatic axis of a patient and for aligning the cylindrical axis of a laser ablation system for ophthalmological surgery. A rotatable image element, such...
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5549632 |
Method and apparatus for ophthalmic surgery
A method and apparatus for precisely controlling and determining the location of the interaction point of a surgical laser beam, and for controlling the shape of the cornea during ophthalmic...
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5549599 |
Apparatus for laser surgery on a cornea
An apparatus for laser surgery on a cornea for correcting the refractive error of a patient's eye by removing away a part of the cornea by a laser beam. The apparatus has a first set device for...
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5507799 |
Ablation apparatus for ablating an object by laser beam
An ablation apparatus for ablating an object to a uniform depth by a laser beam. The laser may be an excimer laser, having non-uniform beam intensity of Gaussian distribution and like. Therefore...
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5507741 |
Ophthalmic method for laser surgery of the cornea
The invention contemplates an inventory of disposable elements adapted for selective placement in the path of laser-beam delivery to the cornea. Each of the disposable elements carries a membrane...
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5490849 |
Uniform-radiation caustic surface for photoablation
A simultaneously generated caustic surface comprised of high energy photons is created for the purpose of ablating organic materials to within optical accuracies. The apparatus and method are...
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5461212 |
Astigmatic laser ablation of surfaces
Laser surface ablation methods and apparatus are disclosed reprofiling surfaces astigmatically. An optical system includes cylindrically-powered elements to form an elliptical laser irradiation...
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5445633 |
Ablation apparatus for ablating a cornea by laser beam
An ablation apparatus for ablating the surface of a cornea by laser beam having a laser source for emitting a laser beam, an ablation optical system for ablating the surface of a cornea by the...
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5439462 |
Apparatus for removing cataractous material
An ophthalmic laser system is disclosed for removing cataractous tissue from the lens capsule of an eye by phacofragmentation of the lens tissue for subsequent aspiration of the treated tissue....
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5437657 |
Instrument for ophthalmological surgery
The surgical instrument apparatus emits a narrow beam of light that exits a point on the blade. The light crosses in front of the blade at a point predetermined by the surgeon. The light is...
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5437658 |
Method and system for laser thermokeratoplasty of the cornea
The invention is a system and method for modifying the corneal curvature by irradiating the cornea to deliver thermal energy to the stroma. The system includes multiple irradiation ports for...
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5425727 |
Beam delivery system and method for corneal surgery
An apparatus and method for delivering radiant energy beams onto an area of a cornea in a line focus to create a linear incisions. The radiant energy beams may be focused in a linear configuration...
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5423801 |
Laser corneal surgery
A method and system for reshaping Bowman's membrane, which lies directly below the anterior epithelial surface of the cornea, to provide correction of refractive errors in the eye by photoablation...
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5411501 |
Laser reprofiling system for correction of astigmatisms
Apparatus and methods are disclosed for astigmatically ablating surfaces in order to impart new profiles and curvatures to such surfaces. A laser means, e.g., a rapidly pulsed laser radiation...
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5395356 |
Correction of presbyopia by photorefractive keratectomy
Methods and apparatus are disclosed for the correction of presbyopia by reprofiling the cornea to create at least one region having a different focal point, and thereby assist the eye in...
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5391165 |
System for scanning a surgical laser beam
In a laser beam delivery system for a surgical laser beam, steering and scanning of the laser beam along the target in transverse (X and Y) directions is accomplished in a mechanically simple and...
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5376086 |
Laser surgical method of sculpting a patient's cornea and associated intermediate controlling mask
A laser (e.g., excimer laser) and masking apparatus performs controlled sculpting of eye surfaces, such as corneal surfaces. The masking system includes a single/multi-layer (e.g., metallic) coated...
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5374265 |
Collagen treatment apparatus and method
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...
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5370641 |
Laser trabeculodissection
This invention contemplates the use of a surgical laser device characterized by ultra-violet or infrared radiation to achieve controlled trabeculodissection in selected regions of the trabecular...
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5368590 |
Corneal sponge and method of use
A sponge which is placed on the cornea for laser treatment to absorb unavoidable exuded fluids from the peribulber. This corneal sponge offers protectiveness, convenience and improved effectiveness...
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5364390 |
Handpiece and related apparatus for laser surgery and dentistry
Apparatus is provided for effecting medical or dental surgery, and to a related method. A subject body on which surgery is to be performed has a reference thereon or therein identified, such as a...
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5364388 |
Beam delivery system for corneal surgery
An apparatus and method for delivering radiant energy beams onto an area of a cornea in a line focus to create a linear incisions. The radiant energy beams may be focused in a linear configuration...
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5360424 |
Tracking system for laser surgery
Systems and methods are disclosed for aligning and confining laser beam exposure to a defined target region of biological tissue during laser surgery by employing a floating lens which is...
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5356409 |
Equipment for the correction of astygmatism by remodelling the corneal surface by means of photo-ablation
The invention relates to equipment for the correction of astygmatism by modelling of the corneal surface by means of photo-ablation. A laser beam produced by an excimer laser is used, which is...
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5356407 |
Ophthalmic surgery probe assembly
An ophthalmic surgery probe assembly includes a handpiece having a handpiece body and a hollow tip of a size suitable for insertion into a human eye, the hollow tip extending distally from the...
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5350374 |
Topography feedback control system for photoablation
Real time feedback control during photorefractive keratectomy of individually ablated rasterstereographically imaged corneal areas; totality of these areas sufficient in number to result in a...
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5348551 |
Method for correcting refractive disorders
A method for changing the shape of the cornea of an eye to correct refractive disorders comprises employing laser radiation having a selected wavelength, beam pattern, and beam power profile, and...
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5342351 |
Beam positioning device for an ophthalmological instrument
For defined positioning of a laser beam in an ophthalmological instrument with a slit projection device and an optical observation unit, a focusing objective is displaced by a displacement device...
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5336215 |
Eye stabilizing mechanism for use in ophthalmic laser surgery
An eye stabilizing mechanism for use with a computer controlled ophthalmic laser system includes a base on which the ophthalmic laser system is mounted. A frame is slidingly mounted on the base,...
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5334190 |
Laser thermokeratoplasty methods and apparatus
Methods and apparatus for correction of optical defects in vision, employing an infrared radiation source and a focusing element, for changing the curvature of the eye by application of focused...
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5323788 |
Overlapping split ring device for corneal curvature adjustment
The intrastromal corneal ring (ICR) of the invention has a flexible, preferably circular body sized and configured such that it can be inserted into a human eye and comprised of a material which is...
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5324281 |
Laser reprofiling system employing a photodecomposable mask
A laser system for reprofiling a surface, such as the corneal surface of an eye, comprising a laser and a photoreactive mask disposed between the laser means and the surface for providing a...
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5318047 |
Method for corneal curvature variation
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...
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5314422 |
Equipment for the correction of presbyopia by remodelling the corneal surface by means of photo-ablation
The invention relates to equipment for the correction of presbyopia by means of corneal surface modelling by photo-ablation, of the type which uses a laser beam (16) (excimer laser) which is masked...
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5312320 |
Apparatus for performing ophthalmological surgery
The invention contemplates controlled ablation of the cornea, using ultraviolet laser radiation, wherein irradiated flux density and exposure time are so controlled as to achieve desired depth of...
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5304169 |
Method for collagen shrinkage
A method for shrinkage of collagen tissue by application of coherent infrared energy, in which the threshold shrinkage temperature is substantially reduced by application of a reagent such as...
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5284477 |
Device for correcting the shape of an object by laser treatment
The invention concerns a device for correcting the shape of an object by laser treatment. The device comprises means (1) for emitting a laser beam (FL) and means (2) for generating a treatment...
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5279611 |
Laser shaping of ocular surfaces using ablation mask formed in situ
A method for modification of the corneal surface, in which a gel is applied to the cornea and molded in situ to create an ablation mask. This ablation mask has a posterior surface substantially...
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5277911 |
Ablatable mask of polyoxyalkylene polymer and ionic polysaccharide gel for laser reprofiling of the cornea
Balanced pH, thermo-irreversible polyoxyalkylene polymer and ionic polysaccharide gels are ideal materials for use as an ablatable mask or coating over the cornea of the eye of a mammal during...
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5263951 |
Correction of the optical focusing system of the eye using laser thermal keratoplasty
A laser system applies energy of the proper wavelength to the cornea of the eye and the stroma of the cornea is thereby heated and changes permanently, causing the shape of the cornea to change....
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5219344 |
Methods and apparatus for laser sculpture of the cornea
In use of laser radiation to ablate corneal tissue, to achieve a sculptured change in curvature of the optically used region of the cornea, a variable magnification (zoom) lens is combined with...
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5219343 |
Apparatus for performing ophthalmogolical surgery
The invention contemplates controlled ablation of the cornea, using ultraviolet laser radiation, wherein irradiated flux density and exposure time are so controlled as to achieve desired depth of...
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5215104 |
Method for corneal modification
Method and apparatus for surgically altering the cornea of an eye by forming a pocket in the corneal stroma, situated between anterior posterior lamellar portions of the cornea, posteriorly...
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5207668 |
Method for opthalmological surgery
The invention contemplates controlled ablation of the cornea, using ultraviolet laser radiation, wherein irradiated flux density and exposure time are so controlled as to achieve desired depth of...
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5196027 |
Apparatus and process for application and adjustable reprofiling of synthetic lenticules for vision correction
An apparatus and process for applying a synthetic lenticule to the cornea of a human eye is disclosed, the process also contemplating selective reprofiling of the lenticule while it is in place...
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5163934 |
Photorefractive keratectomy
Photorefractive keratectomy is accomplished by an excimer laser beam that ablates away corneal tissue in a photo decomposition process. Before this occurs, the epithelium (21) of the cornea (20) is...
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5147352 |
Optical system for use in a surgical apparatus
This invention relates to an optical system, adapted to be disposed between a source capable of emitting a beam of light and a target. Near the upstream focal point of the first optics for...
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