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5837797 |
Process for preparing a sulfur-containing urethane-based plastic lens and the lens prepared thereby
A novel polythiol having four or more functional groups, a process for producing the polythiol comprising reacting thiourea with a specific compound, a sulfur-containing urethane-based resin...
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5838419 |
Method and apparatus for treating refractive eye abnormalities
A method for treating refractive eye abnormalities, including myopia, hyperopia, and astigmatism, by shifting the spectral distribution of incident light is described. Optical filters or tints are...
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5815238 |
Scanning laser demolding of ophthalmic lenses
An apparatus and method for removing a molded ophthalmic lens from between the mold portions in which it is produced. A source of intense electromagnetic radiation is applied to at least one of the...
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5808721 |
Ophthalmic lens wafers and receiver for registering such wafers
Ophthalmic lens wafers for forming a composite lens are provided wherein each front lens wafer has a front registration pattern formed on its peripheral edge, and each back lens wafer has a back...
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5805263 |
Lens blanks, process of manufacture therefor and eyewear incorporating lenses made therefrom
The present invention concerns an optically non correcting lens blank for the manufacture of an optically non correcting lens, having a high curvature, corresponding to an average radius of...
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5805266 |
Method of machining contact lenses
A method for providing a contact lens for a patient. According to this method, an optical preform is selected, and a resting position of the optical preform on the patient's eye is determined. An...
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5790232 |
Spectacle lens and manufacturing method thereof
A method of manufacturing a pair of spectacle lenses, comprises a step of adjusting lens curves of the right and left lenses by making a relatively large lens curve of an R1 surface of one lens of...
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5777717 |
Method for simulation of visual disabilities
Contact lenses with contoured anterior surfaces are employed to obtain informed consent from a patient prior to ophthalmic surgery. These modified contact lenses with contoured surfaces, when worn...
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5774202 |
Method and optical means for improving or modifying color vision and method for making said optical means
A method and optical articles for improving or modifying human color vision by using a color filter with a spectral transmission τ(λ) to compensate for differences between a spectral sensitivity...
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5748282 |
Multifocal contact lens
A multifocal contact lens has diffractive power arising from a series of concentric zones each providing an asymmetric retardation of light across the zone width to direct light predominantly into...
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5737057 |
Ocular lens fabrication method and ocular lens fabrication apparatus
A lens material 66 is caused to overlap upon a curved surface of a support body 90 through an adhesive with the lens material 66 supported by a rotary spindle 18 of a first machining device 14....
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5730911 |
Process for the manufacture of a substrate made of transparent organic glass and substrate thus obtained
The process comprises: (a) the introduction into a mould of a composition which is polymerizable into a transparent organic glass (b) the polymerization of the composition under conditions...
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5715031 |
Concentric aspheric multifocal lens designs
Concentric aspheric multifocal lens designs are disclosed which use a combination of an aspheric front surface, which results in aberration reduction and contrast vision enhancement, along with a...
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5699142 |
Diffractive multifocal ophthalmic lens
A diffractive, multifocal ophthalmic lens including an apodization zone with echelettes having a smoothly reduced step height to shift the energy balance from the near image to the distant image...
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5691798 |
Progressive power ophthalmic lens
A progressive power ophthalmic lens having a spherical distance viewing area, a progressive power portion with a decreasing radius of curvature along an umbilic meridian, and a spherical near...
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5681871 |
Method for preparing ultraviolet radiation absorbing contact lenses
Disclosed is a process for producing an ultraviolet radiation absorbing contact lens from a lens shaped polymer having hydroxyl groups pendant therefrom and having dispersed therein a UV absorbing...
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5650838 |
Programmable smooth junctions on lenses
Programmable smooth junctions are provided for lenses and molds therefor, particularly for toric lens designs, which enable a numerically controlled (NC) machine to be programmed to machine smooth...
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5637265 |
Pad printing coating composition and pad printing process
A transfer-pad printing composition comprising either a latex or solution coating composition comprising a coating vehicle and a monomeric or polymeric hydroxylated and/or carboxylated surface...
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5604549 |
Press-molded optical element
A method of molding an optical element numerically analyzes the thermal stress produced on a molded optical element product within a mold in a visco-elastic temperature range or elastic temperature...
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5598234 |
Method of manufacturing toric single vision, spherical or aspheric bifocal, multifocal or progressive contact lenses
A method for making a finished aspheric single vision, spherical or aspheric bifocal, multifocal or progressive addition contact lens includes the step of fitting a patient requiring a near...
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5592245 |
Apparatus for enhancing visual perception of selected objects in recreational and sporting activities
To enhance perception of a yellow tennis ball while playing or watching a tennis game, the game is viewed through an optical filter mounted between the participant or spectator and the ball. The...
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5589387 |
Method for preventing the accumulation of inorganic deposits on contact lenses
A method for using a composition including a neutralizing system and a sequestering agent which prevents the accumulation of inorganic deposits on contact lenses, particularly when used regularly...
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5583589 |
Process for forming a monocentric seamless bifocal lens
A monocentric seamless bifocal lens is manufactured by obtaining a lens blank having concentric top and bottom spherical surfaces, and grinding the bottom surface to form a major segment having one...
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5576778 |
Design system for designing shapes of eyeglasses
A design system for designing shapes of eyeglasses. In the system, image data expressing the face of a person are first subjected to image processing such as color compensation and profile...
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5548352 |
Anti-astigmatic ophthalmic contact lens for use in performing laser surgery
A contact lens for viewing the interior of a patient's eye during an argon laser trabeculoplasty (ALT) procedure and for delivering laser energy to desired regions of the trabecular meshwork of the...
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5541678 |
Multifocal contact lens and method and molding die for manufacturing contact lens
In a contact lens (1) provided with a front curve (2) formed with a plurality of distance portion curved surfaces (F 1 , F 2 , . . . ) for seeing a distant place . . . )and a plurality of near...
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5526071 |
Multifocal contact lens and method for preparing
A hydrophilic multifocal contact lens customized for a patient comprises, in accordance with the present invention, (i) an anterior surface having at least two annular aspheric surfaces, each of...
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5521656 |
Method of making an ophthalmic lens
An improved opthalmic lens is disclosed which has a plurality of alternating power zones with a continuously varying power within each zone, as well as in transition from one zone to another. In...
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5503694 |
Method of mounting rear eyeglass lens on laminating holder and engaging rear lens with front lens for forming composite eyeglass lens
Front and rear lenses of a composite eyeglass lens are laminated together by holding the front lens in an X, Y adjustable stage on a laminating axis, holding the rear lens in a predetermined...
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5502518 |
Asymmetric aspheric contact lens
A contact lens for use on a patient's eye with an asymmetric aspheric cornea, the lens having an anterior surface, a posterior surface and a base, the posterior surface having a peripheral portion...
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5493350 |
Multipocal contact lens and method for preparing
A multifocal contact lens customized for a patient includes a central portion having a concave aspherical posterior surface of a standardized eccentricity and an annular portion connected to the...
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5485228 |
Multifocal ophthalmic lens pair
A pair of ophthalmic lenses both containing at least two optical powers, one for near vision and one for distance vision are described, both containing in the center portion of the lens the...
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5478824 |
Adherent corrective lens
A corrective lens that is removably adherent to, and substantially in contact with, a pane of a pair of spectacles without the use of a mechanical retention device, and that has at least one curved...
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5475450 |
Protein deposition resistant contact lens
A method for treating hydrophilic and rigid gas permeable contact lenses, as well as the manufacture of protein adhesion resistant and gas permeable enhanced lenses, is obtained through purging the...
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5467149 |
Highly visible markings for contact lenses
A method of improving the visibility of indicia marked into an optically clear surface is disclosed comprising marking a pattern of varying depths within the boundaries of the indicia.
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5461433 |
Highly hydrous soft contact lens and a treating solution for contact lenses
A highly hydrous soft contact lens comprising a copolymer which contains as an ingredient a monomer having constitution similar to that of phospholipid represented by the following general formula:...
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5452031 |
Contact lens and a method for manufacturing contact lens
A contact lens having a smooth surface is made through use of a computer implementing a spline approximation of corneal topology. Piecewise polynomials approximating the corneal topology have equal...
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5448312 |
Pupil-tuned multifocal ophthalmic lens
An ophthalmic lens provides a cumulative ratio of distance to near focal length that is predominantly distance correction under high illumination, nearly evenly divided under moderate illumination,...
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5443597 |
Method of tinting polycarbonate-polyester copolymers
A surface of an article, such as an optical element, formed of a polycarbonate-polyester copolymer, is subsequently tinted to a predetermined degree by first subjecting said surface to ultraviolet...
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5433810 |
Lamination of composite eyeglass lenses
Front and rear lenses of a composite eyeglass lens are laminated together by holding the front lens in an X, Y adjustable stage on a laminating axis, holding the rear lens in a predetermined...
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5430504 |
Bifocal contact lenses
A device for manufacturing bifocal contact lenses is provided. It comprises a rotating head stock provided with an eccentric head supporting a lense holder for holding a lense blank. The lense...
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5428412 |
Method for treating myopia with an aspheric corneal contact lens
Aspheric corneal contact lenses are used to treat myopia by controlled corneal molding. In one embodiment of the method, the lens includes an asymmetric central zone which provides multiple...
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5424786 |
Lateral vision controlling device
A lateral vision controlling device is disclosed which decreases or eliminates visual stimuli entering one of the hemispheres of the brain. The device includes a pair of lenses, with each lens...
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5406341 |
Toric single vision, spherical or aspheric bifocal, multifocal or progressive contact lenses and method of manufacturing
A method for making a finished aspheric single vision, spherical or aspheric bifocal, multifocal or progressive addition contact lens includes the step of fitting a patient requiring a near...
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5402190 |
Biological cycle affecting goggles
A method of avoiding the influence of light on the biological clock caused by the presence of full spectrum light during intervals unexpected by the human body is comprised of wearing goggles that...
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5391589 |
Contact lens and method of producing a contact lens
A contact lens is made by graft polymerization of a contact lens surface by introducing a peroxide on a contact lens substrate surface by a discharging treatment producing a radical and by adding...
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5384606 |
Diffractive/refractive spectacle and intraocular lens system for age-related macular degeneration
An ophthalmic lens system (11), including an IOL (15) having a negative IOL lens portion (22) and a positive lens (13) adapted to be outside the eye and direct light toward the negative IOL lens...
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5381193 |
Protective filter lenses
An ophthalmic protective filter lens having a scotopic transmittance lower than the photopic transmittance by more than a factor of two, a dominant wavelength within the ranges of 580-605 nm and a...
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5373332 |
Plastic spectacle lens and method for making
A plastic spectacle lens includes a protuberance portion intergrally formed with a peripheral portion of one of the concave and convex sides thereof for indicating information thereof. Indication...
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5369453 |
Method and eyeglasses for rectifying color blindness
Rectifying method for color blindness and rectifying eyeglasses for color blindness by using a computer to simulate the process of rectifying color blindness, there are produced 32 kinds of...
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