7 results about "Ocular prosthesis" patented technology

The application discloses a 3D printing ocular prosthesis platform, which is prepared through the following steps: S1, designing the shape of the ocular prosthesis platform and dividing the shape into regions; S2, selecting a porous structure for the ocular prosthesis platform in each region and determining the voxel size according to the connecting point parameters of the selected porous structure; S3, voxelizing and fitting each region to form a voxelized interface; S4, filling the porous structure selected in step S2 into each corresponding region to complete the modeling of the porous structure in each region; S5, connecting the connecting points on adjacent voxelized interfaces to each other and converting the connecting lines into solid rod models to complete the modeling of the interfaces; S6, merging the models obtained in steps S4 and S5 to obtain a final model of the ocular prosthesis platform; S7, 3D printing to obtain a bioceramic blank; and S8, high-temperature sintering of the blank to obtain a 3D printed ocular prosthesis platform after porcelain forming. The application can obtain a new 3D printed ocular prosthesis platform, which provides technical support for ocular prosthesis repair.

A method and a system of determining shape and appearance information of an ocular prosthesis for a patient, a computer program product and a conformer The invention relates to a method and a system of determining shape and appearance information of an ocular prosthesis (7) for a patient, comprising the steps of: - generating shape information for the ocular prosthesis (7), - determining the shape of the ocular prosthesis (7) depending on said shape information, - generating appearance information for the ocular prosthesis by capturing an image of a patient's eye, - fusing the shape and the appearance information, wherein the determination of the shape of the ocular prosthesis comprises - determining the shape based on a shape model being determined based on the shapes of existing prostheses or - determining the shape by generating shape information of an existing patient- specific prosthesis and transforming it into a uniform shape representation, and / or the generation of appearance information comprises performing at least one of - an inhomogeneous illumination correction and - a color characterization being performed using the same or similar viewing conditions as a color characterization of a device used for the manufacturing of the ocular prosthesis based on the appearance information. as well as a computer program product and a conformer (19). -

The invention provides a normal eyeball motion trail capturing method and system, a terminal and a medium, which are used for controlling motion of a preset image in an artificial eye piece display device, and comprise the following steps: acquiring normal eyeball image data in real time based on an image acquisition device; preprocessing the normal eyeball image data; extracting features of the preprocessed image data to obtain eyeball feature points; and performing continuous frame analysis on the preprocessed image data by adopting a feature point matching method so as to obtain movement track information of normal eyeball feature points. According to the invention, through carrying out feature point extraction on normal eyeball image data, carrying out feature point matching analysis, only obtaining motion track information of normal eyeball feature points, and separating motion information from eyeball images, colors, brightness and other data, collected and transmitted data is simplified, the collected and transmitted data volume is reduced, signal delay is reduced, and the accuracy of the data is improved. Therefore, the synchronous movement of the preset image in the artificial eye piece display device is realized.

The invention provides a multifunctional artificial eye seat with polar radiation aperture distribution and a preparation method thereof, and belongs to the technical field of biomedical materials. The artificial eye seat is a porous spherical or ellipsoidal stent taking trace copper doped zinc melilite biological ceramic as a main component. The internal micropores are mutually communicated curved surface pore units, the pore diameters of the micropores are radially expanded from one end of the spherical surface to the opposite side in a macropore-mesopore-micropore gradient layout, a polar radiation pore diameter distribution three-dimensional bracket model is printed by adopting photocuring ceramic, and then the polar radiation pore diameter distribution three-dimensional bracket model is cleaned, dried and sintered to form the polar radiation pore diameter distribution three-dimensional bracket; the artificial eye seat gives consideration to the anatomical physiological structure of the orbit, the surface of the macropore area is attached to the deep soft tissue of the orbit, and the micropore area faces the ocular surface, so that vascularized soft tissue ingrowth is efficiently promoted, infection is durably resisted, common risks such as displacement and exposure of the artificial eye seat are effectively overcome, and the artificial eye seat has good application value in orbit reconstruction and reshaping.

Based on 3D printing technology and corneal topography assisted personalized ocular prosthesis manufacturing method, through the high polymer impression material to make the patient's eye side conjunctival sac impression, and obtain the three-dimensional data of the conjunctival sac impression of the affected eye, and establish a three-dimensional model, remove the front surface of the three-dimensional model with the pupil center as the center, and the corneal diameter data of the healthy eye as the diameter of the circular area, and integrate the pupil diameter and corneal anterior surface curvature data of the healthy eye in this area, and finally obtain the three-dimensional model of the ocular prosthesis, and the ocular prosthesis is made through 3D printing technology, because the data of the pupil diameter and corneal anterior surface curvature of the healthy eye are integrated on the front surface of the three-dimensional model of the affected eye, the ocular prosthesis is more realistic and more suitable for the affected eye.

An ocular prosthesis for replacing a part of an eye of a user, comprising a prosthesis body, characterized in that it comprises a hollow interior space delimited by an anterior element configured so as to simulate the sclera of the eye of the user, and a posterior element, configured so as to copy a portion of an internal ocular edge, and wherein the prosthesis body includes a coating that covers the outer contour of both tne anterior and posterior elements so as to hold them in place, allowing encapsulation of the hollow interior space and simulation of the cornea of the eye of the user.

The application provides an artificial eye manufacturing method, an artificial eye and an artificial eye. The manufacturing method comprises the following steps: obtaining eye image data of a patient, wherein the eye image data comprises eye image data of an affected eye and eye image data of a healthy eye; constructing an initial three-dimensional data model of an artificial eye according to the eye image data of the affected eye, wherein the initial three-dimensional data model is a simulation model with a three-dimensional morphological feature; matching the eye image data of the healthy eye with data samples in a preset artificial eye database, and determining a mapping image data according to a similarity; fusing the mapping image data with the initial three-dimensional data model to obtain a target three-dimensional data model of the artificial eye; and manufacturing the artificial eye based on the target three-dimensional data model. The artificial eye manufacturing method, the artificial eye and the artificial eye provided by the application can imitate the shape of a real eyeball, improve the fidelity of the artificial eye, and effectively improve the manufacturing efficiency.