Glaucoma early stage screening method

Abstract

The invention relates to a glaucoma early stage screening method using a computer to carry out automatic analysis for eyeground photographs, thus fast calculating an eye cup-eye disk C / D ratio value in real time; the features are that the C / D value is compared with a set glaucoma risk value so as to determine the glaucoma existence possibility. The advantages are that the cup / disk ratio changes formed by glaucoma pathology optic nerve progressive damages are employed, thus carrying out automatic eyeground photograph reading analysis under computer assistance. Image fuzzy processing, OTSU algorithm and computer operation are introduced so as to greatly improve determination result accuracy and instantaneity when compared with a conventional diagnosis method singly using an eyeground photograph reading mode, and avoiding expensive and complex detection equipment; low cost high efficiency screening method can be carried out so as to realize glaucoma early discovery and early diagnosis; a database is built, and a screening and uploading step by step mode is employed, thus gradually improving a big data development system under a three-level networking system.

Description

technical field [0001] The invention relates to an early screening method for glaucoma, which relates to the technical field of medical image data processing. technical background [0002] Glaucoma is one of the three leading causes of blindness in the world and is an important global public health problem. Long-term optic nerve damage will eventually lead to irreversible blindness, causing heavy pressure and burden on the patient himself, his family and the society. [0003] China is a country with a large number of glaucoma patients, and there is a long way to go to prevent and treat glaucoma. According to the World Health Organization (WHO), the number of patients with primary glaucoma in China in 2010 was about 15.78 million (11.11-23.64 million), of which 8.31 million (6.70 million-10.42 million) were primary open-angle glaucoma (POAG). , accounting for 18.6% of global POAG; primary angle-closure glaucoma (PACG) was 7.47 million (4.42 million to 13.22 million), account...

AI Technical Summary

Problems solved by technology

[0010] (2) Standardized automatic visual field: Although the inspection is the gold standard for assessing glaucoma functional impairment, it is a subjective inspection, which relies on the cooperation of the subjects and takes a long time (the current SITA-Fast and TOP inspection procedures are still not short enough, and each eye It takes at least a few minutes for the inspection), and the low penetration rate of the perimetry at the grassroots level, and its large size is not easy to carry, which limits its large-scale grassroots population screening

[0012] (4) Direct ophthalmoscopy: the evaluation of the optic nerve has the advantages of rapidity and economy, but its sensitivity and specificity are low, the error is relatively large due to the quality of medical personnel, and the lack of objective records is not conducive to consultation and database establishment

[0013] (5) Examination of optic nerve quantitative measuring instruments such as HRT, GDX, OCT, etc.: it takes a long time, the inspection equipment is expensive, the penetration rate at the grassroots level is very low, the professional requirements of the inspectors are high, and the result interpretation requires specific professional knowledge, etc., screening for most people check is not useful

However, the use of simple measuring instruments to measure cups and plates is more complicated than the operation, and requires high professional requirements and clinical experience for inspectors, while the use of complex measuring instruments is expensive, neither of which can be effectively promoted in primary medical institutions

Medical research in my country has confirmed that the current prevalence of glaucoma in the Chinese population is high and the efficiency of diagnosis and treatment is low. The screening system is very important

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