11 results about "Hypermetropia" patented technology

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.

The utility model discloses a myopia prevention and control resin lens, which comprises a substrate, the front surface of the substrate is provided with a central bright vision area, the periphery of the central bright vision area is provided with an out-of-focus area, the periphery of the out-of-focus area is provided with a cutting area, the out-of-focus area is divided into a first out-of-focus area and a second out-of-focus area, the first out-of-focus area is located in the upper area, the left area and the right area of the central bright vision area, and the second out-of-focus area is located in the lower area of the central bright vision area. According to the utility model, the out-of-focus area is designed according to the use scene of long-time writing and reading, the area of the out-of-focus area below the central bright vision area is set to be the micro-lens dense area, so that hyperopia out-of-focus during writing and reading is reduced, and the upper area and the left and right areas of the central bright vision area are set to be the micro-lens sparse areas. When the eyeballs rotate, hyperopia defocus of a video projection retina can be adjusted in real time, so that the eyeballs are physically adjusted, the situation that the eyeballs are fatigued due to long-time single defocused video is reduced, and the effect of preventing and controlling shortsightedness is achieved.

The utility model discloses an ophthalmology health education tool which comprises a cornea puzzle block, an iris puzzle block, a crystalline lens puzzle block, a vitreous body puzzle block and a sclera puzzle block which are used for simulating the shapes of a cornea, an iris, a crystalline lens, a vitreous body and a sclera respectively. The cornea jigsaw blocks, the iris jigsaw blocks, the crystalline lens jigsaw blocks, the vitreous body jigsaw blocks and the sclera jigsaw blocks can be spliced to form an eyeball model; the sclera puzzle blocks comprise a first sclera puzzle block, a second sclera puzzle block and a third sclera puzzle block; the glass jigsaw blocks comprise a first glass jigsaw block, a second glass jigsaw block and a third glass jigsaw block; the crystalline lens puzzle blocks comprise the first crystalline lens puzzle block, the second crystalline lens puzzle block and the third crystalline lens puzzle block. The ophthalmology health education tool can simulate the shapes of cornea, irises, crystalline lenses, vitreous bodies and sclera, can be assembled to form three eyeball models simulating myopia, hyperopia and normality, and has education significance and interestingness.

The invention relates to an opto-electronic binocular instrument for hypermetropia correction and a method for binocular hypermetropia correction. The instrument comprises two opto-electronic lenses (103, 110; 203, 204) and an imaging subsystem that captures images of the eyes. Using pupil tracking performed by processing the images of the eyes, the system is able to determine the depth at which the subject is gazing. Pupil tracking is performed at very high speed, using a high-performance graphics card and a highly parallelized pupil detection algorithm. The method comprises two steps. In a first step, a calibration is performed, in which the subject is asked to gaze at objects at different distances and the size and position of the pupils are measured. In a second step of the method, a correction is performed using the instrument. The system continuously captures and processes images to calculate the correction to be applied and finally corrects hypermetropia by applying said correction.

Embodiments of the invention ensure that the effect of inhibiting myopia or hypermetropia progression is not affected even in the peripheral region of the spectacle lens. The invention provides a spectacle lens comprising: a first region which causes a light ray incident on an object side surface of the lens to exit from an eyeball side surface of the lens and to converge at a predetermined position A on a retina of a wearer; a plurality of defocused second regions configured to cause the light ray to converge at a position B on the object side or a position C on the far side relative to the position A, wherein at least some of the second regions in a peripheral region of the spectacle lens have a shape which inhibits a change in the defocusing effect, the change being more likely to occur as the distance from the center of the lens increases, the peripheral region being a radius ranging from 4.5 mm to 25 mm from the center of the lens.

Embodiments of the invention ensure that the effect of inhibiting myopia or hypermetropia progression is not affected even in the peripheral region of the spectacle lens. The invention provides a spectacle lens comprising: a first region which causes a light ray incident on an object side surface of the lens to exit from an eyeball side surface of the lens and to converge at a predetermined position A on a retina of a wearer; a plurality of defocused second regions configured to cause the light ray to converge at a position B on the object side or a position C on the far side relative to the position A, wherein at least some of the second regions in the peripheral region of the spectacle lens have a shape which inhibits a change in the defocusing effect, the change being more likely to occur as the distance from the center of the lens increases, the peripheral region being a radius range of 4.5 mm to 25 mm from the center of the lens.

The utility model relates to myopia prevention and control lens technical field, especially a double -sided composite prevention and control lens. Double -sided composite prevention and control lens includes lens body, microlens off -focus area and fog view area, and the optical center is formed to the center of lens body, and microlens off -focus area sets up in the first curve of lens body, and fog view area sets up in the second curve of lens body. Because the first curve of lens body sets up microlens off -focus area, and fog view area is arranged in the second curve, microlens off -focus area provides high -intensity off -focus stimulation, and acts on the peripheral imaging of retina, and the fog view area of second curve can reduce the contrast of peripheral retina, and while correcting central vision, under the double -effect mechanism of peripheral off -focus and contrast control, double -action inhibits the too fast growth of eye axis, and improves myopia prevention and control efficiency. Meanwhile, because the projection area of microlens off -focus area and fog view area coincides, the optimization ability to the peripheral imaging of retina is enhanced, and the precise intervention to the peripheral hypermetropia off -focus of retina is realized.

The present application relates to the field of bionic vision, and particularly to a vision observation image quality evaluation device and method based on a vision bionic structure, which accurately simulates the independent diopter adjustment process of left and right eyes, and truly restores the imaging changes under myopia / hypermetropia and other diopter abnormalities; the consistency and fusion quality of binocular expected collection are improved through the establishment of an image fusion model, an evaluation system based on a deep integrated multi-modal fusion network model is established, the binocular vision bionic structure of the diopter state of the human eye is effectively simulated, left and right eyes are respectively focused, image collection and fusion processing are realized, so as to realize the real evaluation of the viewing effect of the vision bionic structure by the difference in the visual characteristics of the human eye.

The utility model discloses science popularization glasses based on AR technology, which comprise a shell, an elastic band, an AR system, goggle lenses, a fixed face pad and movable face pads, one face of the shell facing the face of a human body is provided with an accommodating space, the outer edge of the accommodating space is provided with the fixed face pad, and the outer side face of the fixed face pad is symmetrically provided with the two movable face pads; wherein the movable face pad is made of an organic silicon material, is detachable, is convenient for a user to replace as required, can be adaptively replaced according to face shapes of different users, and can be replaced by a new face pad after being used for a long time to keep sanitary; the large-capacity containing space meets the requirement that a user does not need to take off worn glasses, professional customization for myopia or hyperopia users is not needed, universality is good, the glasses are suitable for application and popularization, the glasses legs are embedded into the grooves of the movable face pad, and light entering the glasses from the side face can be reduced.

The utility model relates to the technical field of wet chamber glasses, and discloses a pair of wet chamber glasses capable of being worn after eye surgery, which comprises a glasses frame and a contact piece, the outer surface of the glasses frame is fixedly provided with a mounting frame I, the outer surface of the mounting frame I is provided with a connecting groove, and the inner surface of the mounting frame I is provided with a connecting belt assembly through the connecting groove; an insertion groove and a clamping groove are formed in the inner surface of the glasses frame, an elastic piece is arranged on the inner surface of the clamping groove, and a clamping block and a lens are fixedly installed on the outer surface of the elastic piece. According to the wet chamber glasses capable of being worn after the eye surgery, through the insertion installation mode of the clamping grooves and the elastic pieces and the adaptive design of the clamping blocks and the clamping grooves, the lenses are installed more firmly and stably, and the damage risk caused by shaking or displacement of the lenses in the using process is reduced; astigmatism, presbyopia, myopia and hyperopia lenses, lenses of various colors and the like can be selected according to actual use conditions, the lenses can be effectively fixed, and the stability of the lenses in the use process is guaranteed.

The utility model discloses a novel telescope, the adjustment mark point sets up on the outer wall of the diopter hand wheel, and the hypermetropia compensation direction point, zero mark point, myopia compensation direction point are reversely symmetrical and are provided on the outer peripheral wall of two eyepiece link seats along the circumferential length direction, and the adjustment mark point is corresponding with the hypermetropia compensation direction point through the rotation of the diopter hand wheel to drive the eyepiece to displace to the hypermetropia compensation direction point, thereby make the focal point of objective lens and the focal point of eyepiece coincide together to realize the purpose of free focusing, or, the adjustment mark point is corresponding with the zero mark point to drive the eyepiece to make reset movement, and the focal point of objective lens and the focal point of eyepiece coincide together through the cooperation action of the central hand wheel to realize the purpose of fine focusing. Its simple structure can make telescope can switch between free focusing and fine focusing quickly, thereby effectively improve the use experience of user.