Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Portable corneal topography acquisition system

A corneal topography, acquisition system technology, applied in medical science, diagnosis, eye testing equipment, etc., can solve problems such as poor portability and inability to analyze real-time changes in the cornea.

Pending Publication Date: 2020-10-23
THE HONG KONG POLYTECHNIC UNIV
View PDF4 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing corneal topography acquisition systems usually can only analyze a single image. Since the shape of the human cornea may be deformed by changes in the eyelids, the existing corneal topography acquisition systems cannot analyze real-time changes in the cornea.
At the same time, the existing corneal topograph has poor portability and can only be collected in the hospital

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Portable corneal topography acquisition system
  • Portable corneal topography acquisition system
  • Portable corneal topography acquisition system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0051] Specific embodiments of the present invention will now be described in conjunction with the corresponding drawings. However, this invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided only so that the present invention will be thorough and complete so that those skilled in the art can fully describe the scope of the present invention. Wording used in the detailed description of the embodiments illustrated in the drawings should not limit the invention.

[0052] Fig. 1(a) is a schematic structural diagram of the acquisition system of the present invention. The acquisition system 100 includes a projection unit 101 , a hand-held anti-shake platform 102 , a lens group 103 , a camera 104 and an image analysis system 105 . Wherein the projection disk 101 is located on the hand-held anti-shake platform 102, the lens group 103 is movably installed on the front of the camera ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a handheld acquisition system for recording cornea information. The handheld acquisition system comprises a projection part (101), a camera lens (103), a camera (104) and an image analysis system (105), wherein the projection part (101) consists of LED backlight sources (111) and a Placido disk; the inner surface of the Placido disk adopts concentric circular rings which are uniformly chequered with black and white; and light rays emitted by the LED backlight sources (111) are blocked by black parts in the rings and penetrate through the white part in the rings to be transmitted to a cornea (112) to be tested, the inner part of the Placido disk adopts a rotational symmetry discretionary face type, the opening part facing the cornea (112) to be tested, of the Placido disk is extended as far as possible to be convenient for processing of the inner part of the Placido disk, and the rays reflected from the cornea (112) to be tested are imaged through the camera lens (104). The acquisition system is adopted, so that good view fields and image quality can be obtained, and shape changing rule of the shape of the cornea can be conveniently obtained.

Description

technical field [0001] The invention belongs to the field of corneal topographic map information collection, in particular to a hand-held collection system for recording corneal information. Background technique [0002] The refractive power of the cornea accounts for about 75% of the refractive power of the entire eye, so small changes in the surface shape of the cornea will affect the distribution of the refractive state of the entire eye, thereby directly affecting the visual function of the eye. A detailed understanding of the surface topography of the cornea can not only help understand the pathological and physiological changes of the cornea, but also help in the early diagnosis, treatment and prognosis evaluation of some corneal lesions (such as keratoconus, marginal corneal degeneration) that mainly change in corneal topography. are of great significance. As an important measuring instrument in modern ophthalmic medical testing, corneal topography can display the co...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): A61B3/107A61B3/14A61B3/15
CPCA61B3/107A61B3/14A61B3/154
Inventor 纪家树李莉华余宁辉
Owner THE HONG KONG POLYTECHNIC UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com