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Portable infrared eccentric photorefraction system

A portable, infrared technology, used in refractometers, medical science, retinoscopy, etc., can solve the problems of lack of visible light source and high requirements for the cooperation of the subjects.

Inactive Publication Date: 2017-04-26
SHANGHAI MEDIWORKS PRECISION INSTR CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the lack of visible light sources to provide fixation, the requirements for the cooperation of the subjects are relatively high

Method used

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  • Portable infrared eccentric photorefraction system
  • Portable infrared eccentric photorefraction system
  • Portable infrared eccentric photorefraction system

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Embodiment Construction

[0032] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0033] In order to deepen the understanding of the present invention, the specific implementation manners of the present invention will now be described in detail in conjunction with the accompanying drawings.

[0034] A portable infrared eccentric photography optometry system provided by the present invention includes a control system 1, an image acquisition system 2, an image analysis and processing system 3, a display system 4, a lighting system 5, a support beam 6, visible light LED7, infrared lamp L...

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Abstract

The invention provides a portable infrared eccentric photorefraction system. The system comprises a control system, a lighting system, an image acquisition system, an image analysis processing system and a display system, wherein the control system comprises a wireless transmission system and is used for controlling the infrared eccentric photorefraction system to work normally according to work commands; the lighting system is used for providing eccentric lighting to the infrared eccentric photorefraction system; and the image acquisition system formed by an imaging lens and an image acquisition element is used for performing eccentric photorefraction on a detected eye, and refraction and astigmatism related parameters of the detected eye are calculated and displayed by the display system after an acquired image sequence is processed by the image analysis processing system. The system has the characteristics of being simple in operation, high in measurement accuracy, high in measurement speed, small in size, and flexible and convenient, and is suitable for children with relatively poor cooperation capability or detected persons with mental subnormality.

Description

technical field [0001] The invention relates to the field of ophthalmic medical instruments, in particular to a portable infrared eccentric photography optometry system. Background technique [0002] Newborn babies have immature eyeballs and short eye axis, and most of their eyes are farsighted. As we grow older, the eyeballs gradually become larger, the eye axis becomes longer, the degree of hyperopia gradually decreases, and the eyeballs gradually develop from hyperopia to normal eyes. As we all know, hyperopia does not mean seeing far and having supernormal vision, but a kind of visually defective eye with ametropia. For mild hyperopia, if the patient is young or has a strong adjustment ability, he can make up for the refractive defect through his own adjustment ability, and his vision can reach normal. Similarly, myopia is also a kind of ametropic vision defect eye that can't see far away clearly. Hyperopia and myopia are two main types of ametropia defect eyes. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B3/103
CPCA61B3/103A61B3/0008A61B3/0016
Inventor 杨丛渊陈文光郭丁华魏悦张晓丽范文选赵小飞赵立秀
Owner SHANGHAI MEDIWORKS PRECISION INSTR CO LTD
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