37 results about "Ciliary epithelium" patented technology

An intraocular lens (30) having focusing capabilities permitting focusing movement of the lens (30) in response to normal ciliary body (24) movement incident to changes in the distance between the eye and an object under observation is provided. The lens (30) is designed for surgical implantation within the capsule (20) of an eye (10) and includes an optic (32) and an optic positioning element (33) which cooperate to form the lens (30). Accommodation is achieved by relying upon the thickening and thinning of the optic (32) as a result of the normal retracting and contracting of the ciliary body (24) in response to the distance of an object from the viewer.

The present invention discloses a multi-lens vision correction method and its apparatus that use two lenses to form a lens module as a basic structure, and a lens closer to an eye is a concave lens preferably disposed close to the eye as much as possible for correcting the focusing, so that a myopic person can see an object at a far distance. The invention also corrects myopia with excessive minus optical power compensation, and the lens at a distance farther from the eye is a convex lens having opposite characteristics with the lens at a distance closer to the eye according to the excessive compensation, and the invention uses and selects a lens combination with appropriate optical power, so that the final image is produced at a position closer to the front along the central optic axis, and the virtual image of an object converted by the lens module is designed, controlled and converted at a farther distance to change the previous habit of a user. The visual environment of a myopic person is extended from a short distance to a longer distance, and the person's eyes can sense a farther and bigger object, and the Ciliary Body and Lens move to the focus and form a final image at the Retina, unlike the movement made by naked eyes to observe an object. The myopic persons will use their eyesight to view objects at a zone farther than the actual distance. By a natural operation of the physiology of sight and balance of users′ habit, pseudomyopia can be balanced and abnormal elongation of the axial length of an eye due to bad habits can be stopped, and thus achieving a vision correction effect.

A post-positioned stress-type glaucoma drainage valve, relating to a method and device for ophthalmic surgery, in particular to a post-positioned glaucoma drainage implantation device for controlling intraocular pressure, comprising a hollow drainage tube and a valve for controlling the opening of the drainage tube. The valve cover is closed, and the outlet end of the drainage pipe is provided with an openable cover, which is composed of a drainage plate and a cover cover. The outlet end of the drainage pipe is embedded in the drainage plate, and the inlet end of the drainage pipe is perpendicular to the drainage plate. The lower surface of the lower surface protrudes downward from the lower surface of the drainage plate, and the drainage pipeline can be entered by a 23G or 25G puncture knife at the pars plana of the ciliary body; a spring pressure device is provided on the inner side of the cover and the position corresponding to the valve cover; When the cover is closed, the spring pressure device exerts pressure on the valve cover, and the spring pressure device is used to control the intraocular pressure within the normal and safe target intraocular pressure range. The inner diameter of the drainage tube is large, the length is short, and it is not easy to block , which is conducive to ensuring the safety and effectiveness of the drainage valve and realizing long-term control of intraocular pressure.

The invention belongs to the field of ophthalmic diagnosis and treatment equipment, in particular to a portable glaucoma ciliary body syndrome diagnosis and treatment instrument. The portable glaucoma ciliary body syndrome diagnosis and treatment instrument of the present invention is composed of a detection module and a diagnosis and treatment module. The detection module includes a slit lamp microscope module, an intraocular pressure measurement module, and an aqueous humor virus detection module. The diagnosis and treatment module includes an expert system. , diagnosis and treatment module, and interface display module, in which the data of the detection module is transmitted to the expert system database for diagnosis and treatment analysis and to provide treatment plans, in which the diagnosis and treatment module uses the GA‑BP neural network model to improve diagnostic accuracy and establish patient personal files According to the characteristics of intraocular pressure, the number and shape of corneal deposits, and the infection of aqueous humor virus, a variety of main treatment methods are established, and a targeted treatment plan is given through dynamic tracking to reduce the harm of overuse of drugs. The portable glaucoma-ciliary body syndrome diagnosis and treatment instrument has a low misdiagnosis rate, realizes the integration of multiple devices, realizes the dynamic tracking of patient data, and quickly provides the effect of a targeted treatment plan.