Survey on blindness prevention in physical examination centers Exhibit 1:Symptoms related to visual abnormalities seen in physical examination Diplopia or eye position abnormalities High myopia Dark spots and defects in the visual field Abnormal color vision Peripheral anterior chamber depth ≤ 1/5 CK Cloudy crystals Disc color pale Disc C/D ≥ 0.6 Concomitant diseases Symptoms of visual abnormalities seen in physical examination and their blindness prevention; 1. Diplopia or strabismus: It is a subjective symptom and objective symptom of abnormal eye position signs, reflecting grade 2 and grade 3 function of vision. 2, high myopia: is a phenomenon formed during the development of the eye, is the anterior and posterior diameter of the eye increases and the wall of the eye becomes thin, small pupil examination invisible peripheral part of the retinal degeneration is common, is the pre-retinal detachment, retinal detachment without treatment blindness treatment is also the chance of blindness. High myopia is also related to chronic simple glaucoma: without high myopia, the increase in the anterior and posterior diameters of the scleral area of the eye is not large, while the anterior and posterior diameters of the eye in the area of the optic papilla pit grow; while the increase in the optic papilla pit with high myopia is not only an increase in the anterior and posterior diameters of the scleral area of the eye, but also a larger anterior and posterior diameter of the eye in the area of the optic papilla pit, high myopia and the increase in the optic papilla pit both belong to the vascular function of the eye. The eye disease experts suggest that “high myopia should be prevented” and that “glasses with low correction effect are better”. 3, color vision abnormalities: that is, the main sense of neurological disease and neurological disease is the localization of signs, can be investigated whether congenital abnormalities or acquired abnormalities and what is the cause. 4, visual field dark spots and defects: reflect the visual level 1 functional impairment, that is, the main perception of neurological disease, but also the localization of neurological disease signs, including all the information of the eye and the visual path, should also do etiological investigation. 5, peripheral anterior chamber depth ≤ 1/5 CK: i.e., possibly relative flattening of the cornea or relative thickening of the lens also relative shortening of the anterior and posterior diameters of the eye, which is a future closed-angle glaucoma sign and is an indication for laser iris perforation-regardless of family history and regardless of acute glaucoma attack. 6. Lens clouding: Cataract surgery including IOL implantation should be accounted for as a preventive operation for closed-angle glaucoma as well. 7, optic disc color pale: color pale is ischemia – whether the optic disc side is clear or the boundary is unclear is either upstream or downstream ischemia, because the retinal ganglion cell fibers passing through the optic disc run through the inner retina of the eye to the lateral geniculate body of the brainstem in the posterior cranial area of the eye, along the way involves many vessels, from the ophthalmic artery of the internal carotid artery, the middle meningeal artery, the anterior cerebral artery, the anterior communicating artery, the posterior cerebral artery, the posterior communicating artery and the siphon of the internal carotid artery Department of direct blood supply, and vertebral artery is adjacent ……, optic disc boundary is clear is insufficient arterial blood supply, optic disc boundary is unclear is impaired return of body fluid. 8, optic disc C/D ≥ 0.6: is an abnormal trap enlargement, are accompanied by the current abnormal or will be abnormal visual field defects, local ischemia is common, or there is pressure from the vitreous expansion of the optic disc anterior relative to the volume reduction of the eye, or there is a contraction force from the optic nerve tissue inside the reduced number of cells or volume reduction. Exhibit 2: Age distribution of C/D Age distribution Total number of males Number of females Exhibit 3: Statistics of concomitant diseases and treatment events Number of concomitant diseases or treatment events with C/D ≥ 0.6 Number of concomitant diseases or treatment events with C/D ≥ 0.6 Yes No Yes No Exhibit 4: Analysis of etiology of C/D ≥ 0.6 (four-compartment table) A history of increased C/D ratio with pituitary tumors has been reported, which is the result of hypertrophic and high-functioning pituitary gland from theft of blood from the optic nerve. All of the above symptoms are related to vascular dysfunction of the eye and optic nerve, and all are associated with primary glaucoma, of which: cataract is the first curable disease in terms of number of causes of blindness; glaucoma is the first in terms of number of incurable blindness-causing diseases, and it can be reasoned that incurable diseases can be prevented by prevention before they occur, and can be quelled in the early stages, while in the late stages treatment is ineffective. In the stage of transient cerebral ischemic attack biofeedback methods can regulate vascular function with curative effect, vision can reflect 80% of the information received by the person, through visual information feedback body function, this regulation is autonomous, because the visual function examination done in the physical examination does not include visual field, so the visual field function needs to pay attention to itself, the self-examination of visual field function is continuously feasible for the person, with the concept of visual field With the understanding of the concept of visual field, with the continuous self-examination of their own visual field, in order to find the right time to prevent disease.