9 results about "Ciliary sulcus" patented technology

The invention provides an ICL postoperative arch height prediction and adjustment method and device, and the method comprises the steps: a data obtaining step: obtaining eye anatomical data of a patient, including the diameters of a short axis and a long axis of a ciliary sulcus; acquiring state data of the current implanted ICL, wherein the state data comprises a nominal size and a rotation angle in an eye; a geometric modeling and calculation step: establishing a two-dimensional geometric model of the ICL in the elliptical ciliary sulcus based on the nominal size of the ICL and the diameters of the long and short axes of the ciliary sulcus, calculating the diagonal length limited by four supporting leg points of the ICL on the model according to the rotation angle of the ICL in the eye, and further calculating the theoretical geometric arch height; and an adjustment scheme generation step: on the basis of the calculated theoretical geometric arch height, generating at least one secondary operation adjustment scheme for adjusting the actual postoperative arch height to be within a clinical ideal range, the adjustment scheme comprising rotating the current ICL to a new angle or replacing the current ICL with another ICL with a different size.

The present disclosure describes an optical probe for applying a laser light to at least the flat portion of the ciliary body and optionally other areas, such as the trabecular mesh, the ciliary crown and / or the ciliary sulcus of the eye, the present invention relates to methods, such as for treating glaucoma, reducing intraocular pressure (IOP), improving the outflow of aqueous humor from the eye, and / or reducing the accumulation of aqueous humor within the eye. The optical probe may be adapted for simultaneous treatment of a plurality of different regions, tissues, or eye bodies of the eye, or for sequential treatment of a plurality of different regions, tissues, or eye bodies of the eye.

The utility model provides a lens capsular bag anchoring device. The lens capsular bag anchoring device comprises an anchoring body and an anchoring arm. The anchoring body is in an M shape, the two anchoring arms are connected to the two opposite ends of the anchoring body respectively, and fixing rings are arranged at the ends, away from the anchoring body, of the anchoring arms. In the operation process, a suture is used for knotting at the V-shaped tip end of the anchoring body, and the other end of the suture penetrates out of the sclera of the ciliary sulcus and is knotted outside the eye to be fixed between sclera layers. The middle V-shaped portion of the anchoring body is arranged in front of an anterior capsule, the two protrusions at the upper end of the M shape pull the edge of an anterior capsule ring, the anchoring arm is implanted into a capsule bag, the equator of the capsule bag is jacked, pressed and pulled, the crystal capsule bag is made to restore the shape, and when an operation is finished, the anchoring arm can be permanently fixed to the sclera, and the IOL and the capsule bag are prevented from deviating together. Secondly, for a patient with dislocation of the IOL-capsular complex, the IOL-capsular complex can be pulled to the normal position through the anchoring device and fixed to the sclera.

The utility model provides an ophthalmologic operation needle which comprises a needle body, and a needle tip is arranged at one end of the needle body. A needle hole is formed in the needle tip and penetrates through the needle body in the length direction of the needle body, and the diameter of the needle hole ranges from 0.01 mm to 0.08 mm. According to the ophthalmologic operation needle, the central needle hole is formed in the needle point, and a 10-0 or 8-0 polypropylene suture can penetrate through the needle hole in the diameter range, so that after the needle point penetrates into an eye, the suture can penetrate through an IOL bag to be knotted and fixed with an IOL loop, and the long needle can exit in situ without penetrating through the eyeball wall on the other side. For a patient with IOL deviation, IOL bag complex deviation or only need to perform IOL unilateral loop ciliary sulcus fixation, a needle hole is formed in the tip end of the long needle, and after threading, the IOL is introduced into the eye through a needle tip. According to the three-piece type IOL, a suture line can be knotted and fixed to an IOL loop, and a long needle retreats along the original path. For a one-piece IOL, a long needle with an 8-0 suture can penetrate through the loop of the IOL, the polypropylene suture is left on the loop of the IOL, and the broken end is subjected to electrocoagulation knotting, so that operation steps are reduced, and wounds are reduced.

A lens for use in an intraocular lens system for treating age-related macular degeneration (AMD), the lens including an anterior surface, a posterior surface, and a plurality of haptics configured to align the anterior light-converging intraocular lens with an optical axis of the eye. The plurality of haptics may have a symmetrical design and comprising ciliary-sulcus-engaging surfaces configure to position the lens within in a ciliary sulcus of an eye. At least one of the anterior surface and the posterior surface may be rendered as aspherical surfaces selected to induce spherical aberration while minimizing optical aberration and thereby provide for a continuum of retinal images to be focused at an area macula of a retina of the eye between two retinal eccentricities.

An artificial lens capsule is provided for use during cataract surgery or in cases of aphakia (absence of lens) or posterior capsule rupture (PCR). A common complication during cataract surgery is the rupture of the posterior capsule, preventing the placement of a monofocal intraocular lens in the lens capsule due to inadequate support. Typically, a 3-piece, long haptic intraocular lens can be placed in the ciliary sulcus or capsule if the monofocal intraocular lens is sufficient. However, for placing a toric (astigmatism correcting) or presbyopia-correcting intraocular lens (multifocal), there are currently no options for a 3-piece sulcus-fixated lens. The artificial capsule disclosed herein can be inserted and supported by the anterior capsular rim or sutured into the sclera if capsular support is inadequate. This provides a stable region for placing a single-piece toric or presbyopia-correcting intraocular lens, thereby enhancing the options for lens placement in cases of inadequate capsular support. The device can also be a reservoir for other future intraocular and / or drug-eluting devices.

The present application relates to a kind of intelligent auxiliary prescription systems of lens eye intraocular lens, comprising: haptics landing line acquisition module, obtain the three-dimensional structure data of anterior chamber and posterior chamber, construct 3D topographic map of ciliary sulcus area by AI three-dimensional image semantics analysis, obtain the best fitting ciliary sulcus line by fitting, with the best fitting ciliary sulcus line as reference, calculate and obtain haptics landing line;Ideal haptics determination module, according to the lateral depth difference between each point on haptics landing line, obtain the ideal haptics position combination sequence of intraocular lens;Crystal matching module, obtain the inventory data of crystal, based on the arch height prediction range and ideal haptics position combination sequence obtained in advance, obtain the best matching intraocular lens and its implant rotation position scheme from the crystal inventory.Compared with prior art, the present application has the advantages of high accuracy of crystal size matching, meeting the stability requirements of crystal implantation, more accurately guiding how to rotate and adjust arch height of crystal and optimizing crystal prescription process.

A posterior chamber type intraocular lens with a lens and a function of reducing postoperative arch height reduction comprises an optical part and a supporting part, and through holes are formed in the center of the optical part and the edge of an optical area and used for maintaining aqueous humor circulation and balancing intraocular pressure; the supporting part is of a structure with four foot loops folded inwards by 50-60 degrees, array type micro-villus with the length of 0.25 mm, the interval of 0.1 mm and the size of 0.5 mm * 0.5 mm is arranged on the lower surface of the supporting part, the aqueous humor circulation efficiency is guaranteed through the design of through holes, the angle-optimized foot loop form and a micro-villus anchoring system are combined, the supporting part can be effectively embedded into ciliary sulcus tissue, a double-fixing mechanism is achieved, and the supporting part can be used for fixing the ciliary sulcus tissue. The structure innovation can restrain the axial displacement of the intraocular lens after operation, prevents the arch height from being excessively reduced after operation, solves the problem of arch height attenuation caused by aqueous humodynamic change and insufficient mechanical fixation of the existing implant, and provides a long-term stable refraction solution for high myopia correction.

The invention discloses a plasma diffraction type variable-focus optical surface intraocular lens and a preparation method and application thereof, and belongs to the technical field of ophthalmic medical instruments. The crystalline lens comprises a rear surface plasma diffraction optical layer, a front surface slow-release nanogel layer, a base material and supporting loops. The rear surface layer realizes zooming and light intensity modulation through a radial asymmetric electromagnetic field gradient and an axial photochromic refractive index; the front surface layer is an embedded long-acting slow-release nanogel organic medium film layer formed by crosslinking drug particles and macromolecules, and light waves of an organic medium cover 200-450 nm ultraviolet and blue light wave bands. The base material is made of biocompatible materials, the supporting loops are C-shaped loops and the like, and the size of the supporting loops is 6-12 mm and can be adjusted. During preparation, all the functional layers are prepared firstly, and then the functional layers are replicated to the base material through integrated nanoimprint. The crystalline lens can be implanted into a posterior atrial sac, a ciliary sulcus or an anterior chamber and other parts, has the functions of zooming, light regulation and control, ultraviolet prevention and drug sustained release, and is remarkable in clinical value.