27 results about "Peripheral retina" patented technology

Systems and methods are provided for improving overall vision in patients suffering from a loss of vision in a portion of the retina (e.g., loss of central vision) by providing symmetric or asymmetric optic with aspheric surface which redirects and / or focuses light incident on the eye at oblique angles onto a peripheral retinal location. The intraocular lens can include a redirection element (e.g., a prism, a diffractive element, or an optical component with a decentered GRIN profile) configured to direct incident light along a deflected optical axis and to focus an image at a location on the peripheral retina. Optical properties of the intraocular lens can be configured to improve or reduce peripheral errors at the location on the peripheral retina. One or more surfaces of the intraocular lens can be a toric surface, a higher order aspheric surface, an aspheric Zernike surface or a Biconic Zernike surface to reduce optical errors in an image produced at a peripheral retinal location by light incident at oblique angles.

The invention discloses a spectacle lens and a design method thereof. The spectacle lens comprises a lens body, wherein the lens body comprises a first surface arranged towards the retina of a human eye; the lens body is provided with an optical center which coincides with the geometric center of the first surface. The first surface comprises a retina refraction area, a retina periphery refraction area and a refraction correction area which are sequentially arranged from the optical center to the edge of the lens body; the retinal diopter, the peripheral retina diopter, and the diopter correction region are disposed around the optical center, respectively, and cooperate together to intervene in retinal imaging quality within the pupil range. According to the retina peripheral characteristics of the wearer, the micro-structure lens more adaptive to the retina of the human eye is designed, the retina peripheral diopter of the human eye can be more accurately obtained, and the progress of ametropia is efficiently intervened according to the characteristics of the retina peripheral diopter of the human eye.

The invention discloses a spectacle lens with a hexagonal cylindrical microstructure on the surface, and relates to the technical field of optical lenses, and the spectacle lens comprises a lens main body which is divided into a central optical area, a hexagonal cylindrical microstructure distribution area and a peripheral optical area from inside to outside in sequence by taking the geometric center of the lens main body as a circle point, the hexagonal cylindrical surface microstructure is arranged on the surface of the lens main body and comprises a plurality of regular girdle cylindrical surface microstructures and inverse girdle cylindrical surface microstructures which are concentrically arranged, the regular girdle cylindrical surface microstructures and the inverse girdle cylindrical surface microstructures are alternately arranged in the radial direction, and irregular astigmatism generates high-order disturbance on incident wave surfaces of human eyes. The method is mainly suitable for teenagers with fast myopia development, and low-order and high-order aberrations and myopia defocus can be alternately introduced into the peripheral retina view field, so that the effect of preventing and controlling the myopia of the teenagers is improved.

The invention belongs to the technical field of medical equipment, and particularly relates to gradient out-of-focus hyperopia correction glasses and a design method thereof.The gradient out-of-focus hyperopia correction glasses are each provided with a lens structure with three functional partitions, each lens structure comprises a base lens, and the central portion of each base lens is a central correction area; the annular transition stimulation area is located outside the central correction area, and the peripheral strengthening area is located on the outer side of the transition stimulation area. The design of the gradual-change hyperopia defocusing amount conforms to the effect that the hyperopia defocusing amount is increased in a stepped mode due to the fact that the retina form is transited to the peripheral retina from the macular area, and the good vision correction and hyperopia treatment effects are achieved, it is guaranteed that a clear object image is formed in the central area, and amblyopia training of a patient is not affected; a relatively clear central side view field range is provided, and the visual quality is ensured; peripheral retina hyperopia defocus is formed, and eye axis growth and hyperopia degree reduction are promoted.

The invention discloses a wide-area slit-lamp microscope based on a deflection liquid lens and a control method of the wide-area slit-lamp microscope, and belongs to the technical field of ophthalmic medical equipment. The system comprises a deflection zooming module and an intelligent lighting module, view field deflection and zooming are achieved through an electric control liquid lens, a slit light source is controlled in combination with synchronous servo, and the control method comprises wide area scanning, dynamic zooming deflection, intelligent lighting optimization and data archiving. The method is suitable for wide-area examination of the microscopic structure of the eye, and is especially beneficial to examination of peripheral retina conditions. The wide-area slit-lamp microscope disclosed by the invention can break through the limitation of small view field of a traditional slit lamp, and can effectively overcome the invasive operation risk faced by means of a contact type lens in order to enlarge the view field. According to the invention, the examination range can be expanded in a non-contact, non-invasive, efficient, clear and visual manner in the whole examination process, great advantages are provided in the aspect of comprehensive observation of eye tissues, the acquisition of a more comprehensive microscopic structure of eyes is facilitated, and faster and more accurate diagnosis of eye diseases is facilitated.

The present disclosure relates to methods of managing ocular axis length related diseases such as myopia. The present invention includes an ophthalmic lens for myopia management wherein the ophthalmic lens is configured with an optical region comprising a central remote region and at least one peripheral treatment region configured with optical components to increase the intensity of light diffusing throughout a focal retinal image. The central distal region of the ophthalmic lens provides foveal correction, and an optical component within the at least one peripheral treatment region provides directional guidance to the peripheral retina of the myopic eye as an optical stop signal to decelerate, control, suppress, or reduce the rate of myopia progression.

This application discloses an optical element and an optical wearable device. The optical element includes a substrate with a visible field of view and a control area surrounding the visible field of view. The control area has multiple recessed structures, each with an opening and an optical functional surface. The optical functional surface and the opening together define the recessed structure. The optical functional surface and the surface of the substrate have an angle, so that incident light rays can be deflected when passing through the optical functional surface along the thickness direction, thereby forming a blurred image in the peripheral retina, reducing the imaging quality of the peripheral retina and suppressing the abnormal development of refractive errors.

An ophthalmic lens for inhibiting myopia progression includes a central region and an annular region. The annular region includes a sub-surface optical element formed via a laser-induced change in the refractive index of the material forming the annular region. The sub-surface optical element is configured to modify the distribution of light to the peripheral retina of the user in order to inhibit the progression of myopia.

The invention discloses an ocular axis growth regulation spectacle lens, and relates to the technical field of optical lenses. The spectacle lens is suitable for frame glasses and corneal contact lenses and is provided with a central optical area and a peripheral filtering area, the central optical area is located in the middle of the spectacle lens, the peripheral filtering area is arranged around the central optical area, the central optical area is an area where all visible light wavelengths penetrate, and the peripheral filtering area is located in the middle of the spectacle lens. The peripheral filtering area is an area for selectively transmitting or blocking the target wavelength light, and the peripheral filtering area is used for filtering or blocking the target wavelength light to the peripheral retina so as to adjust the growth of the ocular axis. All visible light wavelengths can penetrate through the central optical area to ensure normal visual experience of a wearer, and the peripheral filtering area selectively penetrates through or blocks light rays with specific wavelengths, so that the spectacle lens can accurately adjust illumination conditions around the retina and inhibit light with unsuitable wavelengths under the condition that normal vision is not interfered, and the quality of the spectacle lens is improved. The effect of adjusting the growth rate of the ocular axis is achieved.

Aspects of the present disclosure relate to an integrated contact lens device for ophthalmoscopic examination, including a lens portion, an upper lid speculum portion, and a lower lid speculum portion, and methods of use thereof. The integrated contact lens device facilitates improved visualization of the peripheral retina, including the upper and lower hemi-retina, both via manual examination and via a wide-angle camera, which may utilize the contact lens for viewing. The integrated contact lens device also prevents or reduces corneal dryness and patient discomfort during the examination.

The invention relates to a dynamic out-of-focus lens which has a certain diopter at the same time. Each lens comprises a lens frame, a lens body, a thin film, a micro lens and a driving device. A cavity is defined by the glasses frame, the lenses and the thin film, and fluid exists in the cavity. Through special optical design and arrangement, the micro lenses form myopic defocus on the peripheral retina while correcting the central vision. The invention also provides a pair of glasses using the dynamic out-of-focus lens.

Methods of inhibiting progression of myopia apply myopia inhibiting wavefront corrections to light incident on the peripheral retina. A method of inhibiting progression of myopia includes applying a myopia inhibiting wavefront correction to light from a peripheral vision region. An annular sector of an ophthalmic lens is configured so that light from the peripheral vision region forms an image on an annular region of the peripheral retina. The myopia inhibiting wavefront correction is configured to reduce a circumferential-to-radial aspect ratio of the image.

Systems and methods are provided for improving overall vision in patients suffering from a loss of vision in a portion of the retina (e.g., loss of central vision) by providing a piggyback lens which in combination with the cornea and an existing lens in the patient's eye redirects and / or focuses light incident on the eye at oblique angles onto a peripheral retinal location. The piggyback lens can include a redirection element (e.g., a prism, a diffractive element, or an optical component with a decentered GRIN profile) configured to direct incident light along a deflected optical axis and to focus an image at a location on the peripheral retina. Optical properties of the piggyback lens can be configured to improve or reduce peripheral errors at the location on the peripheral retina. One or more surfaces of the piggyback lens can be a toric surface, a higher order aspheric surface, an aspheric Zernike surface or a Biconic Zernike surface to reduce optical errors in an image produced at a peripheral retinal location by light incident at oblique angles.

A system and method are provided for bimodal detection and / or imaging of macular pigments. Fundus autofluorescence spectroscopy is applied in a first and a second region of an eye to measure fluorescence values from the fluorescing pigment (e.g., lipofuscin). The first region can be a macula, which has a higher density of macular pigments, and the second region can be in the peripheral retina, which has a lower density of macular pigments. Fundus reflection spectroscopy is applied in the first and a second region of an eye, as a baseline image, to determine absorptions due to other pigments (e.g., melanin) than the macular pigments and the fluorescing pigment. The density of macular pigments is determined using the measures fluorescence values and the absorptions due to other pigments.

An apparatus for treating refractive error of an eye includes one or more optical elements configured to project a stimulus including a defocused image onto a peripheral retina outside the macula. While the stimulus can be configured in a variety of ways, in some embodiments the stimulus is arranged to reduce interference with central vision, such as macular vision. The stimulus can be a defocused image, can include an amount of defocus in a range of about 3 diopters ("D") to about 6 D. In some embodiments, the stimulus is of a brightness that is a suitable amount greater than the brightness of background illumination, such as at least 3 times the background brightness. In some embodiments, each of a plurality of stimuli includes a spatial frequency distribution having an amplitude profile, the spatial frequency distribution having a spatial frequency in a range of about 1 x 10 ‑1 cycles per degree to 2.5 x 10 1 cycles per degree.

A lens for an eye that includes a zone with a first power profile for images received by the retina on the fovea, a zone with a second power profile for images received by the peripheral retina on the nasal side and a zone with a third power profile for images received by the peripheral retina on the temporal side. The first power profile is selected to provide clear or acceptable vision and the second and third power profiles are selected to affect the peripheral image position.

Ophthalmic lenses and related methods provide a longitudinal chromatic alteration for an eye to provide the eye with a stimulus to inhibit myopia progression or reverse myopia. An ophthalmic lens configured to inhibit progression of myopia in an eye includes a central zone and an annular zone that includes an annular zone subsurface optical structure. The ophthalmic lens is formed from a transparent material having a lens material refractive index. The annular zone subsurface optical structure includes refractive indices that differ from the lens material refractive index to provide an annular zone chromatic alteration for light incident on the peripheral retina to reduce a rate of axial growth of the eye or decrease an axial length of the eye.

The invention discloses a progressive multi-focus lens for controlling eye axis growth. The progressive multi-focus lens comprises a far-use area, a progressive channel and a near-use area which are sequentially arranged in the vertical direction. At least the peripheral area of the lens body is processed by laser to form a plurality of optical scattering microstructure points, and the microstructure points are uniformly distributed on the surface of the lens in an equiangular spiral manner according to a Fermat spiral distribution rule, so that multi-layer and multi-direction optical scattering is formed in the peripheral retina area of a wearer, the peripheral imaging contrast ratio is reduced, and the imaging quality is improved. Excessive growth of the ocular axis can be inhibited, and central vision is kept clear. The invention can be used in the field of juvenile myopia prevention and control.

The invention discloses a scattering optical lens applied to the technical field of optics, the inherent contradiction between the central vision definition and the peripheral myopia control efficiency is successfully decoupled by realizing the spatial programmability of the scattering characteristic on the lens, and the lens can be used for improving the vision definition and the peripheral myopia control efficiency according to the specific vision requirement of a user. Scattering units with low scattering intensity and narrow scattering angle distribution are densely arranged in a central vision area, so that high-resolution visual quality and contrast are ensured, and glare and visual discomfort are avoided. Meanwhile, scattering units with high scattering intensity, wide scattering angle distribution or a specific phase modulation function are arranged in the peripheral area, so that accurate myopia defocus signals are effectively induced on peripheral retinas or the imaging contrast ratio is greatly reduced, the myopia control effect is maximized, a regionalized optical intervention mode is adopted, and the myopia control precision is improved. The optical efficiency and the treatment effect of myopia control are remarkably improved, and meanwhile the visual comfort of a wearer is guaranteed.

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.

Systems and methods are provided for improving overall vision in patients suffering from a loss of vision in a portion of the retina (e.g., loss of central vision) by providing symmetric or asymmetric optic with aspheric surface which redirects and / or focuses light incident on the eye at oblique angles onto a peripheral retinal location. The intraocular lens can include a redirection element (e.g., a prism, a diffractive element, or an optical component with a decentered GRIN profile) configured to direct incident light along a deflected optical axis and to focus an image at a location on the peripheral retina. Optical properties of the intraocular lens can be configured to improve or reduce peripheral errors at the location on the peripheral retina. One or more surfaces of the intraocular lens can be a toric surface, a higher order aspheric surface, an aspheric Zernike surface or a Biconic Zernike surface to reduce optical errors in an image produced at a peripheral retinal location by light incident at oblique angles.

Ophthalmic lenses and related methods provide a longitudinal chromatic alteration for an eye to provide the eye with a stimulus to inhibit myopia progression or reverse myopia. An ophthalmic lens configured to inhibit progression of myopia in an eye includes a central zone and an annular zone that includes an annular zone subsurface optical structure. The ophthalmic lens is formed from a transparent material having a lens material refractive index. The annular zone subsurface optical structure includes refractive indices that differ from the lens material refractive index to provide an annular zone chromatic alteration for light incident on the peripheral retina to reduce a rate of axial growth of the eye or decrease an axial length of the eye.

The invention discloses a spectacle lens with a front surface provided with an annular micro-structure with positive and negative spherical surfaces and a rear surface designed in a low-contrast manner, and belongs to the technical field of design and processing of optical lenses, and the spectacle lens is characterized in that the front surface of a lens main body is provided with a positive spherical micro-structure annular belt and a negative spherical micro-structure annular belt; the rear surface of the lens main body is provided with a semitransparent light scattering area microstructure ring belt; all the ring belts are concentric rings which are arranged in sequence; a plurality of positive spherical surface microstructures, a plurality of negative spherical surface microstructures and a plurality of semitransparent light scattering area microstructure ring belts which are arranged at intervals are respectively arranged in the positive spherical surface microstructure ring belt, the negative spherical surface microstructure ring belt and the semitransparent light scattering area microstructure ring belt; the central position of the lens main body is a central optical area; and the area between the annular belts is a transition area. The method is suitable for teenagers and children with fast myopia development, defocus and low contrast are alternately introduced into the peripheral retina view field, and the myopia intervention effect is improved.

Peripheral retinal OCT can be used to generate peripheral retinal OCT images allowing for the peripheral retina to be viewed. A peripheral retinal vision system can determine that a set of fiducial markers is in a field-of-view of at least one camera and record positional data comprising a contact lens position and angle with respect to an OCT imaging system having OCT scanning mirrors in a first position. The system can determine whether a retinal layer is in an OCT scan captured while the set of fiducial markers is in the field-of-view of the at least one camera and the OCT scanning minors are in the first position; and for an OCT scan having he retinal layer and being captured while the set of fiducial markers is in the field-of-view of the at least one camera and the OCT scanning minors are in the first position, store that OCT scan.

Ophthalmic lenses include one or more annular sectors configured to provide one or more off-axis corrections to light incident on the peripheral retina to inhibit myopia progression. An ophthalmic lens includes a central zone and an annular zone that includes an annular sector configured to provide a myopia inhibiting wavefront correction to light from a peripheral vision region of a peripheral visual field of the use. The first annular sector is configured so that light from the peripheral vision region passes through the first annular sector to form an image of the peripheral vision region on an annular region of the peripheral retina. The myopia inhibiting wavefront correction reduces a circumferential-to-radial aspect ratio of the image of the first peripheral vision region.

The application discloses a scattering lens and a design method thereof applied to the technical field of optical devices and vision correction, and aims to solve the technical contradiction that a traditional myopia control lens is difficult to consider central vision clarity and effective intervention of a peripheral retina, the method constructs a central, transition and peripheral three-zone heterogeneous scattering array, differentiates and configures unit density, size and scattering angle, and adopts non-periodic arrangement to inhibit optical artifacts; in combination with a pupil self-adaptive modulation layer and a task mode switching module, dynamic response of light and a visual task is realized; on the design, based on individual physiological parameters, a multi-objective genetic algorithm is iteratively calibrated, and the peripheral retina contrast control efficiency is improved by more than three times, while the central area contrast loss is less than 5%, so that high-precision, personalized and all-weather myopia control effect is realized.

The invention discloses a myopia prevention and control composite out-of-focus lens which comprises a central vision area and a peripheral out-of-focus area. Wherein the peripheral defocusing area comprises a micro lens array layer arranged on the front surface of the lens and an adaptive curved surface layer arranged on the rear surface of the lens; the micro-lens array layer comprises a plurality of micro-lenses which are arranged in an annular array by taking the central visual area as an original point, the defocusing amount of the micro-lenses is gradually increased in a gradient manner from the center to the periphery, and after being refracted by the micro-lenses, defocusing light rays are projected to the peripheral retina at a preset incident angle; the adaptive curved surface layer is an asymmetric free-form surface designed based on the eye nasal side and temporal side retina out-of-focus sensitivity difference and 3D corneal topography data. By controlling the defocusing amount and the light incidence angle of the micro lens, it is ensured that a defocusing signal is accurately projected to an effective area around the retina, and stable myopic defocusing is formed. The asymmetrical free-form surface enables the nose side to obtain more defocusing compensation, thereby being more in line with the physiological characteristics of human eyes, and improving the effectiveness of the defocusing effect and the wearing comfort.