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An illumination imaging system for dry eye detection

An imaging system and illumination optical system technology, applied in the field of dry eye detection illumination imaging system, can solve problems such as large variability, low repeatability, and vulnerability to external influences, so as to improve contrast, reduce pain, improve stability and The effect of accuracy

Active Publication Date: 2020-09-29
SUZHOU INST OF BIOMEDICAL ENG & TECH CHINESE ACADEMY OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These traditional methods for evaluating tear film stability are invasive tear break-up time (IBUT), which has limitations such as large variability, low repeatability, and susceptibility to external influences.

Method used

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  • An illumination imaging system for dry eye detection
  • An illumination imaging system for dry eye detection
  • An illumination imaging system for dry eye detection

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Embodiment Construction

[0034] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.

[0035] It should be understood that terms such as "having", "comprising" and "including" as used herein do not entail the presence or addition of one or more other elements or combinations thereof.

[0036] Figure 1~2 An implementation form according to the present invention is shown, which includes: .

[0037] Placido disc 1, which consists of several concentric rings of black and white;

[0038] Illumination optical system 2, which is arranged on the rear surface of the Placido disc, the illumination optical system includes several groups of LED units arranged in a ring, and projects the Placido disc onto the tear film 3;

[0039] The imaging optical system receives the projection image of the Placido disk on the tear film, and along the imaging optical path, the imaging...

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Abstract

The invention discloses an illumination imaging system for dry eye disease detection, which comprises: a Placido disc, which includes several black and white concentric rings; an illumination optical system, which is arranged on the back surface of the Placido disc, and the illumination optical system It includes several groups of LED units arranged in a ring, projecting the Placido disc onto the tear film; an imaging optical system, which receives the projection image of the Placido disc on the tear film, and along the imaging optical path, the imaging optical system sequentially includes imaging Objective lens and CCD camera. The invention can collect a series of pictures of the tear film on the surface of the examinee's eye from intact to rupture in a non-invasive way, and then post-process the image algorithm to obtain the tear film rupture time, thereby judging the Whether the tear film break-up time of the patient is abnormal, the technical scheme of the present invention can not only reduce the pain of the patient, but also improve the stability and accuracy of the detection result.

Description

technical field [0001] The invention relates to the field of optical detection. More specifically, the present invention relates to an illumination imaging system for dry eye syndrome detection. Background technique [0002] Dry eye, also known as keratoconjunctival xerosis, common symptoms include dry eyes, easy fatigue, itchy eyes, foreign body sensation, burning sensation, sticky secretions, fear of wind, photophobia, and sensitivity to external stimuli, etc. The prevalence of dry eye is about 21%-33.7%. At present, the incidence of dry eye in the world is increasing year by year, and it has developed into a common and frequently-occurring disease that endangers health. With the widespread use of electronic screens, the deterioration of the environment, the abuse of eye drops, the wearing of contact lenses and other reasons, dry eye will continue to increase. The main cause of dry eye is the abnormal rupture of the tear film on the ocular surface. Related research artic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B3/14G03B15/02G02B13/00
CPCA61B3/0008A61B3/14G02B13/00G03B15/02
Inventor 董月芳朱海龙付威威刘敏周哲
Owner SUZHOU INST OF BIOMEDICAL ENG & TECH CHINESE ACADEMY OF SCI
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