243results about How to "Improve acuity" patented technology

The present invention relates to methods, network devices, and machine-readable media for an integrated environment for automated processing of reports of suspicious messages, and furthermore, to a network for distributing information about detected phishing attacks.

A method for closed-chest cardiac surgical intervention relies on viewing the cardiac region through a thoracoscope or other viewing scope and endovascularly partitioning the patient's arterial system at a location within the ascending aorta. The cardiopulmonary bypass and cardioplegia can be induced, and a variety of surgical procedures performed on the stopped heart using percutaneously introduced tools. The method of the present invention will be particularly suitable for forming coronary artery bypass grafts, where an arterial blood source is created using least invasive surgical techniques, and the arterial source is connected to a target location within a coronary artery while the patient is under cardiopulmonary bypass and cardioplegia.

A toric multifocal lens including a plurality of vision correction regions having centers on a common optical center axis, the plurality of vision correction regions providing respective different values of a spherical optical power, each of the plurality of vision correction regions having an optical power for correction of astigmatism, wherein the improvement comprises: at least one of a cylindrical optical power and a cylindrical axis orientation which determine the optical power for correction of astigmatism being different in at least two different vision correction regions of the plurality of vision correction regions, so that the at least two different vision correction regions have respective different values of the optical power for correction of astigmatism.

An ophthalmic formulation is provided for the prevention and treatment of adverse ocular conditions, including presbyopia, arcus senilis, age-related macular degeneration, and other conditions associated with aging. The formulation is also useful in the prevention and treatment of other adverse ocular conditions such as those associated with oxidative and/or free radical damage within the eye; these conditions can involve a condition, disease, or disorder of the cornea, retina, lens, sclera, anterior segment, or posterior segment of the eye. In one embodiment, the formulation contains at least 0.6 wt. % of a biocompatible chelating agent, an effective permeation enhancing amount of an ophthalmic permeation enhancer such as methylsulfonylmethane (MSM), an anti-AGE agent, i.e., a compound that serves to reduce the presence of advanced glycation endproducts (AGEs) in the eye, and a pharmaceutically acceptable ophthalmic carrier suited to the particular formulation type (e.g., eye drops or ointments). In another embodiment, the formulation contains an ophthalmologically active agent and MSM as a penetration enhancer.

A general purpose processor architecture (methods and apparatuses) that can discern all subsets of a serial data stream which fulfill an arbitrarily complex reference pattern. The invention comprises an ordered set of Detection Cells conditionally interconnected according to the reference pattern and operationally controlling one another's states through the network. The invention preferably includes a Host Interface to enable reporting of Results from a search session as well as the input and control of reference patterns and source data.

An intraocular lens is provided that having optical parameters that may be adjusted in-situ, and is particularly useful in cataract patients that require an adjustment in the optical power of the lens post-implantation. The lens body carries an array of interior fluid-filled cells in which fluid is controllably moved by micropumps upon application of energy from an external source to move a fluid media into the cells to thereby alter the lens surface shape.

Ophthalmic devices are provided having a violet-light vertical cut-off filter abruptly absorbs light between the wave lengths of between approximately and 400 nm and 450 nm such that a curve when plotted as percent transmission versus wavelength has the shape as depicted in FIG. 2. In one embodiment the ophthalmic devices are made from acrylates and the light absorbing compound is an Eastman Yellow 035 MA dye.

A method and apparatus are disclosed for controlling optical aberrations to alter relative curvature of field by providing ocular apparatuses, systems and methods comprising a predetermined corrective factor to produce at least one substantially corrective stimulus for repositioning peripheral, off-axis, focal points relative to the central, on-axis or axial focal point while maintaining the positioning of the central, on-axis or axial focal point on the retina. The invention will be used to provide continuous, useful clear visual images while simultaneously retarding or abating the progression of myopia or hypermetropia.

The present invention relates to an accommodating intraocular lens, which is suitable for replacement of the natural crystalline lens of the eye within the capsular bag. The intraocular lens can include a retainer plate with an annular region surrounding a central opening, and an optical lens. The retainer plate acts as a foundation for the optical lens, as the retainer plate can be positioned near or at the posterior portion of the lens capsule. The optical lens can sit on the retainer plate, but is otherwise not attached to the retainer plate. The optical lens can overlap or fit within the central opening of the retainer plate. The retainer plate can include a lip portion integrally disposed on a region of the retainer plate, wherein the lip provides a surface for holding at least a portion of an intraocular lens.

The invention is a polarized sunglass lens that utilizes a multiband contrast enhancer comprised of three rare-earth oxides to provide relatively high peak transmittance in portions of the red and green spectrum, relatively lower transmittance for the blue spectrum, and very low transmittance for the UV spectrum. The lens provides enhanced perception of colors, heightened contrast, and improved visual acuity. The inclusion of vanadium pentoxide in the lens provides attenuation of the UV spectrum, thus protecting the user's eyes and the internal layers and colorants from UV-induced damage. The front lens element can be either the multiband contrast enhancer or a photochromic lens element.

Methods of treating complement-mediated ocular disorders by administering agents that inhibit a subject's complement component in an amount sufficient to treat the ocular disorder wherein, in a selected embodiment, said agent is an anti-complement aptamer that, in a preferred embodiment, is an anti-C5 aptamer.

A corneal-scleral orthokeratology contact lens is formed of rigid gas permeable material with uniform arc lengths in the treatment area even when the corneal curvature varies and asymmetric blends or splines called minor zones, where the portion of the blend or spline is shorter toward the lens center and broader toward the lens edge, and relieve the treatment area of all centering responsibility, transferring it to the limbal-scleral region. The method of determining the total sagittal height of an eye at a given chord diameter to predetermine exact fitting parameters and predict unaided visual outcome trial lenses, with exact chord and sagittal height values used to match the sagittal height of an eye, the sagittal value may be obtained from some ocular topographers. A computer program can easily take the sagittal information and design an optimum lens.

The invention provides devices and methods for performing less-invasive surgical procedures within an organ or vessel. In an exemplary embodiment, the invention provides a method of closed-chest surgical intervention within an internal cavity of a patient's heart or great vessel. According to the method, the patient's heart is arrested and cardiopulmonary bypass is established. A scope extending through a percutaneous intercostal penetration in the patient's chest is used to view an internal portion of the patient's chest. An internal penetration is formed in a wall of the heart or great vessel using cutting means introduced through a percutaneous penetration in an intercostal space in the patient's chest. An interventional tool is then introduced, usually through a cannula positioned in a percutaneous intercostal penetration. The interventional tool is inserted through the internal penetration in the heart or great vessel to perform a surgical procedure within the internal cavity under visualization by means of the scope. In a preferred embodiment, a cutting tool is introduced into the patient's left atrium from a right portion of the patient's chest to remove the patient's mitral valve. A replacement valve is then introduced through an intercostal space in the right portion of the chest and through the internal penetration in the heart, and the replacement valve is attached in the mitral valve position.

A system and method are provided for obtaining a gazing direction of a user of an image-capturing device relative to an image of an object to be captured; identifying an area of the image based on the obtained gazing direction; and performing optical focusing for the identified area using an autofocus arrangement of the image-capturing device.

A device for preparing food includes a stand having a plurality of legs for supporting at least one cutting board and lifting it off a work surface. The cutting board has a hole in it. A pan fits in or underneath the hole to catch juices, scraps or finished cut items cut on the cutting board.

An eyewear lens provides for selective spectral performance in response to varying light conditions, including both changes in intensity and spectral distribution. The lens responds selectively to both ultraviolet and visible light, and exhibits different spectral transmittance characteristics under different lighting conditions, to provide for better vision for a wearer. In addition to this active response, the lens also may include a polarizer to further control light and to minimize the glare that interferes with clear vision.

A contact lens with a central region (10) that is optimally less than approximately 1.9 millimeters in diameter and that is preferably overcorrected by approximately 25% to 100% over the correction needed for reading. Unexpectedly, the central region (10) does not impair distance vision, but compensates for presbyopia and therefore alows a user to focus on objects within a range of near and intermediate distances. A method for fitting the contact lens is also provided.

The present invention relates to methods of treating Leber's hereditary optic neuropathy and dominant optic atrophy with tocotrienol quinones, including alpha-tocotrienol quinone, in order to alleviate symptoms of the disease.

A method and apparatus for improving visual acuity when providing a visual image from a “high” resolution input device to a “low” resolution output device. The described invention is of particular use when the output device is an array of electrodes as part of a retinal prosthesis used to restore vision to a visually-impaired patient. In that various limitations may, within the foreseeable future, limit the density of such an electrode array (and thus the resolution of the output image), the present invention teaches techniques to assign processed pixel subsets of a higher resolution image to a single electrode. By varying the pixel subsets, e.g., by jittering, and/or altering the processing criteria, the perceived visual acuity may be further improved. Alternatively and additionally, such processing may be further extended to drive neighboring electrodes in combination to thus stimulate virtual electrode sites and thus further enhance visual acuity.

An augmented reality head worn device comprising a curve combiner transparent to visible light and reflective in an selected infrared frequency range, a scanning light source defining a field of view, a holographic optical element adapted to provide pupil expansion to create an eye-box, and at least one projection system for providing high acuity at or near a center of the field of view.