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Artificial retina system for improving contrast sensitivity

A retina and sensitivity technology, used in artificial respiration, laser surgery, electrodes, etc., can solve the problem of insufficient current difference, and achieve the effect of improving contrast sensitivity, optimizing resolution, and improving contrast sensitivity

Active Publication Date: 2020-01-31
KOREA UNIV RES & BUSINESS FOUND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Currently, an epiretinal membrane type artificial retina product that collects visual information from an artificial retina system using an external camera can independently adjust the intensity of current that stimulates the inner side of the eye by processing the information using a camera image analysis program, but for simply converting the output using a photodiode Subretinal membrane-type artificial retina, etc., where current is applied to the visual cells, and the difference in current produced by different contrasts is not large enough for the patient to have contrast sensitivity

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  • Artificial retina system for improving contrast sensitivity
  • Artificial retina system for improving contrast sensitivity
  • Artificial retina system for improving contrast sensitivity

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Embodiment Construction

[0044] 1. The artificial retina system according to the first embodiment

[0045] First, refer to Figure 4 An artificial retina system according to a first embodiment of the present invention is described. Figure 4 It is a diagram explaining the overall configuration of the artificial retina system. The artificial retina system according to the present invention includes an artificial retina 100 , a microcomputer 200 , a battery 300 , an external power source 400 , a user input unit 500 and an external computer 600 .

[0046] The artificial retina 100 is a part that is installed on a visual cell layer of the retina and converts light into electrical signals to stimulate visual cells V with the converted electrical signals, and will be described in detail below.

[0047] The microcomputer 200 is a part that controls each photodiode unit 110 of the artificial retina 100, and specifically compares the magnitude of the electrical signal output from the photodiode 111 with the ...

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Abstract

Provided is an artificial retina system for improving contrast sensitivity. The artificial retina system, according to one embodiment of the present invention, comprises: an artificial retina (100) which is installed under the retina and includes a plurality of photodiode cells (110); and a microcomputer (200) for comparing, with at least one reference value, the size of an electric signal outputted from a photodiode (111) in each of the photodiode cells (110), and controlling to amplify or reduce the electrical signal outputted by each of the photodiode cells (110) according to the result ofcomparison, wherein visual cells corresponding to each of the photodiode cells (110) can be stimulated with an electric signal controlled by the microcomputer (200).

Description

technical field [0001] The present invention relates to an artificial retina system having improved contrast sensitivity compared to related artificial retinas. Background technique [0002] The retina is an important nervous tissue that converts external images entering through the cornea and lens into electrical signals and transmits the electrical signals to the brain. The width of the retina is about 6.25cm 2 , and there are approximately 100 million visual cells in the retina. Rod cells, which make up most of the visual cell layer, convert images into electrical signals, and these electrical signals enter the optic nerve and travel to the brain at a speed of about 480km / h. The brain interprets weak electrical signals to perceive images and identify objects. The retina is one of the tissues with the largest blood supply per unit area and requires smooth removal of waste products produced as a by-product of chemical action. When abnormalities occur in retinal blood ve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61N1/05A61N1/36A61F2/14A61F9/008
CPCA61F2/14A61F9/008A61N1/0543A61N1/36046A61N1/3615A61N1/36128A61F2009/00863A61F2250/0002A61N1/36192
Inventor 金成祐金正锡
Owner KOREA UNIV RES & BUSINESS FOUND