117 results about "Presbyopia" patented technology

The invention provides a progressive addition lens design method based on free-form surface expression, is mainly used for vision correction of presbyopia groups, and belongs to the field of eye vision optical design. According to the design method, focal power matching and astigmatism minimization of the progressive multi-focus lens are achieved by optimizing the free-form surface, the design method constructs a nonlinear functional minimization problem by means of free-form surface expression, and meanwhile an optimized initial solution is obtained by solving a linear fourth-order partial differential equation related to a spherical base disturbance term; according to the method, astigmatism in an effective area of the lens can be minimized on the premise of realizing focal power matching as far as possible, high astigmatism areas on two sides of the progressive channel are transferred to an edge area of the lens, and various customization requirements including specific light adding degree, channel length, effective visual area range and the like can be met for a wearer.

An ophthalmic lens configured to correct and / or treat at least one condition of the eye (e.g., presbyopia, myopia, hyperopia, astigmatism, binocular vision disorders, night vision image quality, and / or visual fatigue syndrome) comprising: a base power profile; and at least one pulse selected to modify the base power profile.

The invention relates to the technical field of ophthalmology medical treatment, in particular to an excimer laser cutting parameter optimization method for presbyopia correction, which comprises the following steps: (1) collecting eye data of a patient: collecting eye structure data and vision information of the patient; (2) establishing a personalized eye model: constructing a personalized eye three-dimensional model of the patient based on the collected eye data; (3) determining an optimization objective function: comprehensively considering the correction effects of far vision, near vision and middle vision and the risk of postoperative complications, and determining the optimization objective function; and (4) constructing a cutting parameter constraint condition: setting the cutting parameter constraint condition according to the eye condition of the patient. The method aims at solving the problems that in the prior art, an excimer laser cutting parameter optimization method for presbyopia correction is insufficient in the aspects of individuation, accuracy, comprehensiveness, safety and the like.

Implantable medical devices for use in or on the eye. An implantable device may have at least one electrode thereon for issuing therapy, such as via electrical current or voltage, while implanted in or on the eye, for the treatment of one or more of macular degeneration, glaucoma, presbyopia, or other condition or disease of the eye. The implantable device may comprise a transducer for receiving power from an external device that may be worn on the patient using any of optical, inductive, mechanical or radiated energy. An example includes an implantable device for placement on the retina which has a gap or opening to place electrodes near the maculae without covering the fovea. Other examples may target other portions of the eye anatomy.

The invention belongs to the technical field of medical instruments, and particularly relates to a pair of hyperopia correction glasses based on a refractive topographic map and a design method thereof. The pair of hyperopia correction glasses comprises a base lens, the middle part of the base lens is an out-of-focus-free area, an annular area outside the out-of-focus-free area is an out-of-focus stimulation area, the geometric center of the out-of-focus stimulation area coincides with the center of the out-of-focus-free area, and a plurality of out-of-focus correction areas are arranged on the base lens within the out-of-focus stimulation area. And a plurality of micro lenses with the same diopter are arranged in each defocus correction area. Based on the MRT peripheral defocus detection result of the patient, the individualized full-eye customization technology is adopted, accurate matching of the lens and the peripheral defocus of the retina is ensured, the defocus amount of eyeballs in different directions can be accurately adjusted through individualized customization, the eyeballs return to a comfortable area, the ideal hyperopia defocus state is formed, and the visual effect of the eyeballs is improved. The effects of promoting eye axis growth and treating hyperopia are enhanced.

According to certain embodiments, an ophthalmic surgical system for treating presbyopia comprises controllable components and a computer. The controllable components comprise a light source that generates a light beam and a scanner that directs a focal point of the light beam. The computer determines an ablation profile to remove tissue from a central region and a peripheral region of a cornea of a first eye of a pair of eyes. The ablation profile is designed to remove tissue from the central region to yield a protrusion to provide for near-vision, and to remove tissue from the peripheral region to correct to emmetropia.

A vision screening device displays visual stimuli and captures image(s) of the eye while the visual stimuli is changing over a period of time. The vision screening device uses the images to determine and monitor refractive error, ambient light level(s), pupil size, and gaze angle as the visual stimuli changes over the time period. Based on the refractive error, a determination of hyperopia and / or presbyopia is made. Based on the gaze angle and / or the pupil size, a confidence metric is determined. Based on the confidence metric and / or the determination, a recommendation for the patient is generated and displayed.

According to certain embodiments, an ophthalmic surgery system for treating presbyopia includes a controllable component and a computer. The controllable component includes a light source that generates a light beam and a scanner that guides the focus of the light beam. The computer identifies an ablation profile to remove tissue from central and peripheral regions of the cornea of ​​a first eye of a pair of eyes. The ablation profile is designed to remove tissue from the central region to create a protrusion and provide near vision, and to remove tissue from the peripheral region to correct emmetropia.

An electronic device may include a lens module having a tunable lens. The tunable lens may operate in multiple modes, such as a normal mode, a presbyopia mitigation mode, a near focus mode, and a negative power boosting mode. During operation, the electronic device may acquire data and adjust the tunable lens based on the acquired data. The tunable lens may switch from the normal mode to the presbyopia mitigation mode in response to determining that a nearby object is being viewed through the lens module. The tunable lens may switch from the normal mode to the negative power boosting mode in response to a low ambient light level and / or a high eyestrain level. The tunable lens can switch between modes over a transition period. When the tunable lens changes mode, the output device may notify the user.

The invention relates to the technical field of ophthalmology optics, and discloses an implantable APD implant for treating presbyopia, and the method comprises the steps: carrying out the focal power mapping of a far-sight diopter component in a target optical parameter, obtaining the basic refraction surface type data, and carrying out the layout of a near-sight diopter component annular structure, and obtaining the diffraction phase structure data; carrying out integrated aberration balance on the two kinds of data to obtain a composite optical surface type data set; converting the phase variation in the composite optical surface type data set into an initial step height by combining a lens material and an environmental medium optical constant; obtaining diffraction structure morphology parameters based on material dispersion attribute optimization; constructing a digital processing map by taking the geometric position of the surface as a processing node and taking a topology and depth evolution relationship as a processing edge; performing microstructure construction on the surface of the optical polymer substrate according to the digital processing atlas to obtain an APD implant; according to the invention, the APD implantation processing efficiency and the optical adaptability efficiency can be improved.

The application discloses an auxiliary visual light device of mixed light, which mixes the light emitted by different color temperature light emitting units of a mixed light source module, forms a visual effect under the action of the mixed light, and can effectively stimulate the rod cells and cone cells on the retina, which are two kinds of photosensitive visual cells, compared with the prior art, the light intensity of the mixed light can break through to the retina of the eye, and the rod cells and the cone cells respectively dominate dark vision activity and bright vision activity. Therefore, the auxiliary visual light device of mixed light can assist users in visualizing objects, reading books and newspapers, and other visual activities, and provides a new scheme for assisting the human eye to clearly see objects on the level of light technology, in addition to wearing corresponding special glasses to correct, to help solve the problem of unclear vision caused by myopia, hypermetropia, presbyopia and other reasons. Moreover, the wavelength of the light generated by each light emitting unit is greater than 450nm, which can avoid the harm of blue light.

This invention discloses an adaptive intelligent focusing liquid crystal lens and its implementation method, belonging to the field of liquid crystal optical device technology. It aims to solve the technical problems of existing liquid crystal focusing lenses, such as low adjustment accuracy, slow response speed, limited adaptability to various scenarios, inability to achieve adaptive matching across the entire refractive range, and insufficient wearing comfort. The liquid crystal lens comprises a protective lens layer, a first liquid crystal layer, an intermediate insulating layer, a second liquid crystal layer, an optical substrate layer, and a coating layer stacked sequentially. Combined with a drive control module and a sensing and acquisition module, it achieves stepless continuous adjustment of the refractive power. The implementation method involves acquiring human eye refractive parameters and ambient light parameters through the sensing and acquisition module, and then outputting a precise voltage signal through the drive control module to regulate the molecular arrangement of the two liquid crystal layers, achieving adaptive intelligent focusing. This invention can achieve a refractive adjustment range of -10.00D to +6.00D, a response time ≤200ms, and an optometric accuracy of ±0.12D. It is suitable for various vision needs such as myopia, hyperopia, presbyopia, and astigmatism, balancing medical-grade accuracy with consumer-grade wearing comfort, and can be widely applied to wearable vision devices such as adaptive smart glasses.

The present invention generally relates to an insert for embedding in a silicone hydrogel contact lens. The insert is made of a cross-linked material that is rigid in a dry state at room temperature (from about 22°C to about 26°C), has a high oxygen permeability and a high refractive index in a fully hydrated state, and can become softer at temperatures greater than 32°C. Such a material can be used to manufacture an insert for embedding in a contact lens to correct corneal astigmatism, presbyopia, and color blindness, and to impart photochromic properties to the lens. The present invention also relates to a method for manufacturing an embedded silicone hydrogel contact lens including the insert of the present invention, and to an embedded silicone hydrogel contact lens including the insert of the present invention.

To provide a dynamic contact lens comprising an optical portion having at least two metastable configurations, wherein interaction of the dynamic contact lens with the eyelid and / or tear meniscus induces a transition between the metastable configurations.SOLUTION: A dynamic contact lens 100 may include one or more features capable of facilitating interaction of the contact lens with a source of tear fluid, such as an eyelid and / or a tear meniscus, and capable of facilitating transition between the metastable configurations. The mechanism may be configured to regulate the flow of tear fluid into and out of the tear body formed between the posterior surface of the optic portion 101 and the anterior surface of the cornea. The dynamic contact lens 100 may be used for vision correction, such as correction of presbyopia, slowing of myopia progression, or correction of vision caused by an irregularly shaped cornea.SELECTED DRAWING: Figure 1

The invention discloses a plano presbyopic composite lens. The plano presbyopic composite lens comprises a lens body, the outer side surface of the lens body is smooth; a main plano-light curved surface, a left lower plano-light curved surface, a right lower plano-light curved surface and a presbyopic curved surface are arranged on the inner side of the lens body; the left lower plano-light curved surface, the right lower plano-light curved surface and the presbyopic curved surface are located below the main plano-light curved surface, and the left lower plano-light curved surface and the right lower plano-light curved surface are located on the left side and the right side of the presbyopic curved surface respectively; the area of the main plano-light curved surface is larger than the total area of the left lower plano-light curved surface, the right lower plano-light curved surface and the presbyopic curved surface. When the plano presbyopia composite lens is used, a presbyopia patient can see an object at a short distance and can see the object at a long distance, and the plano presbyopia composite lens is convenient for the presbyopia patient to use.

The utility model relates to the technical field of information interaction, in particular to a capacitance pen which comprises a finger stall, a capacitance pen body is arranged on one side of the finger stall, and a camera is arranged on the outer wall, close to the capacitance pen body, of the finger stall. A display screen used for displaying the content shot by the camera is arranged on the outer wall of the finger sleeve on the side opposite to the capacitance pen body. The capacitive pen body and the camera are arranged on one side of the finger stall sleeved on the finger, and the display screen for displaying the content shot by the camera is arranged on the opposite side of the finger stall, so that a picture on a touch screen of an input terminal shot by the camera can be amplified and presented in front of the eyes of a user through the display screen; the finger capacitance pen body is moved to be aligned to the input position, the capacitance pen body on the finger sleeve is pressed down for input, an amblyopia person with presbyopia can input conveniently, and the situation that mistaken touch is caused due to the fact that the person cannot see clearly is avoided.

Described herein are systems and / or methods for designing contact lens systems with inter-ocular refractive differences (i.e., refractive disparity) for presbyopia. An exemplary method can include the step of determining a plurality of lenses included in a contact lens system for treating presbyopia. Each lens of the plurality of lenses can be configured for optical correction and may have an optical power distribution associated therewith. The plurality of lenses can be grouped based on optical correction. Each lens of these lenses in a particular group can have a different focal power distribution. The example method can include the step of creating a fitness guidance based at least on the plurality of lens and add requirements. This fitness guidance enables the provision of effective add inter-ocular disparity. The inter-ocular parallax of the effective add can be determined by optimizing monocular performance over a range of adjustment requirements and brightness levels.

Methods and compositions for treating impaired vision due to presbyopia, hyperopia, or astigmatism, and for enhancing contrast sensitivity and stereopsis, are disclosed. Typically, a topical composition comprising about 0.05-10 wt% of a methylated xanthine and about 1-10 wt% of an ophthalmic miotic is applied to the outer surface of at least one eyelid of a subject.

The utility model provides a myopia and hyperopia correction demonstrator which comprises a demonstrating platform, a first sliding rail is arranged on the surface of the top of the demonstrating platform, a first moving platform is arranged on the surface of the top of the demonstrating platform in a sliding mode, a first sliding block is arranged at the bottom end of the first moving platform, and the first moving platform is connected with the first sliding rail in a sliding mode through the first sliding block. A first mounting plate is vertically mounted on the surface of the top of the first moving table, and a first rotating motor is mounted on the surface of the first mounting plate; through cooperative use of a first moving table, a first mounting plate, a first rotating motor, a first rotating disc, a first mounting disc, a second mounting disc, a third mounting disc, a presbyopia eyeball lens, a myopia eyeball lens and a normal eyeball lens, the presbyopia eyeball lens, the myopia eyeball lens and the normal eyeball lens can be conveniently and quickly rotated to designated positions; and the demonstration efficiency is improved.

To provide methods and devices for wavefront treatments of an eye's astigmatism, coma, and presbyopia.SOLUTION: Wavefront-engineered monofocal lenses, inducing spherical aberration into the eye's central pupil, provide vision correction beyond 20 / 20 acuity and improve quality of vision by eliminating image distortion caused by uncorrected astigmatism and coma in the eye. New presbyopia-correcting lenses, including Extended Depth of Focus (EDOF) bifocal, EDOF trifocal, and quasi-accommodating lenses, are disclosed for presbyopia corrections between +0.75 D to +3.25 D, and they are achieved by inducing a positive spherical aberration and a positive focus offset less than 3 Diopters in a central section plus a negative spherical aberration in an annular section within a central part of a monofocal lens.SELECTED DRAWING: Figure 5A

The invention relates to ophthalmic compositions comprising thiol drugs, such as cysteamine, for the prevention and / or treatment of ocular conditions related to the hardening and / or opacification of the crystalline lens of the eye; for instance, ocular conditions such as cataracts and presbyopia.

The invention discloses eye protection liquid and a preparation method thereof, and belongs to the technical field of traditional Chinese medicine external preparations. The eye protection liquid is prepared from a chrysanthemum extract, borneol, calculus bovis factitius, venenum bufonis, realgar, a mint extract, a pipewort extract, a feather cockscomb seed extract, a butterflybush flower extract, pearl powder and purified water according to a specific weight part ratio, and is prepared by soaking, distilling, filtering and filling. The traditional Chinese medicine composition can rapidly permeate into eyes and directly enter focus, can relieve and treat various eye diseases such as presbyopia, myopia, amblyopia, cataract and the like, has the effects of soothing liver and relieving depression, promoting blood circulation and dredging collaterals, tonifying kidney and nourishing yin, supplementing optic nerve nutrition and improving microcirculation around the eyes, has the total effective rate of 100% and the cure rate of 80-95%, and is free of side effects and drug resistance and convenient to use.

The invention relates to the technical field of orthokeratology lenses, and discloses a bifocal presbyopic orthokeratology lens based on regional refraction. A base arc area, a reversal arc area, a positioning arc area and a peripheral arc area which are connected with one another are sequentially arranged on the inner surface of the bifocal presbyopic orthokeratology lens from the center to the periphery, the base arc area comprises a low-beam light area, a high-beam light area and a transition area, the low-beam light area is located on the first half side of the base arc area, and the high-beam light area is located on the second half side of the base arc area. The transition area is located between the low-beam light area and the high-beam light area, and the curvature of the low-beam light area, the curvature of the transition area and the curvature of the high-beam light area are sequentially decreased. According to the embodiment of the invention, the comfort, convenience and safety in the presbyopia correction process can be improved.

The present invention relates to a method of designing an optical element and said optical element designed to correct presbyopia by extending depth of focus. The method comprises selecting an optical path difference (W(r,θ)) and / or a surface topography (Δ(r,θ)) of the optical element, which is expressed as A·rn·cos⁡(N·θ+ φ), where the values of n, N and A are constants chosen from n≥3, N≥3 and A≠0. The value of A is at least as high for an average angular value of a phase transfer function (PTF) of the ocular optical system formed by the optical element to have an absolute value less than or equal to π / 2 over the entire range of spatial frequencies from 0 cycles / degree to 20 cycles / degree, and at least at a distance from the eye to object (d) in the range of 0.3 m to 6 m.

1. Name of the product in this design: Optometrist (RMK-900). 2. Purpose of this design: For objective refraction testing of myopia, hyperopia, astigmatism and presbyopia. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D rendering 1.

According to some embodiments, an ophthalmic surgical system for treating presbyopia includes controllable components and a computer. The controllable components include a light source for generating a light beam and a scanner for guiding the focus of the beam. The computer determines an ablation profile to remove tissue from the central and peripheral regions of the cornea of ​​the first eye in a pair of eyes. The ablation profile is designed to: remove tissue from the central region to create a protrusion to provide near vision, and remove tissue from the peripheral region to correct to emmetropia.

In some embodiments, wavefront engineered contact / scleral / intraocular lenses correct presbyopia and / or astigmatism. Some aspects relate to apparatuses including structures doped with certain nanoparticles to enhance alignment of liquid crystal materials. Some embodiments relate to tunable optical lenses for vision correction that have a structure with doped nanoparticles in the liquid crystal layer and alignment layer or only with blue phase liquid crystal layer without any alignment layer.

An electronic device may include a lens module with a tunable lens. The tunable lens may be operable in multiple modes such as a normal mode, a presbyopia-mitigation mode, a near-focus mode, and a negative power boost mode. During operation, the electronic device may gather data and adjust the tunable lens based on the gathered data. The tunable lens may be switched from the normal mode to the presbyopia-mitigation mode in response to determining that a nearby object is being viewed through the lens module. The tunable lens may be switched from the normal mode to the negative power boost mode in response to ambient light levels being low and / or eye fatigue levels being high. The tunable lens may switch between modes over a transition period. An output device may notify the user when the tunable lens changes modes.