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Humans have 5 'chances' of going blind every day

Posting time:2022-12-03 09:57:11

Humans have 5 'chances' of going blind every day

Eyes are called the windows to the soul. We need to understand the world intuitively through them. How to prevent visual disability? This knowledge needs to be well understood. The eye sees things like taking pictures with a camera: the pupil is the aperture, the refractive system (lens, vitreous, aqueous humor, cornea) is the lens, and the retina is the film. Problems in any part can affect visual function. What is visual function? Visual functions include form perception (vision, visual field, contrast sensitivity), light perception (dark adaptation), and colour vision. What is the reference value for normal vision development? The eyeball and visual function are gradually developed. The reference value of normal vision development: at 1 month, there is only manual movement in front of the eyes, retrospectively bright; at 6 months, the visual acuity can reach 0.06; at the age of 1, the visual acuity is 0.1; at the age of 2, the visual acuity is 0.5; 3 The visual acuity at the age of 0.6; the visual acuity at the age of 4 is 0.8; after the age of 5, the visual acuity can reach 1.0. What is a visual disability? Visual disability refers to visual impairment or reduced visual field in both eyes due to various reasons, even after medication, surgery and standard refractive correction. The best corrected visual acuity (vision with appropriate glasses) of the good eye in both eyes is less than 0.3 or the radius of the field of vision is less than 10 degrees, making it difficult to perform work, study or other activities that ordinary people can do in the usual way. Visual disabilities include low vision and blindness. What are the criteria for low vision and blindness? The medical standard for low vision is that the best corrected visual acuity of the good eye in both eyes is less than 0.3 but equal to or greater than 0.05, which is a visual disability. If the best corrected visual acuity of the good eye in both eyes is less than 0.05, it is called blindness. What are the main causes of low vision disability? According to the sampling survey data of the disabled in my country, the top 5 eye diseases that cause visual disability are cataract, retinopathy, corneal disease, refractive error and glaucoma. The main eye diseases causing blindness and low vision in children: congenital and hereditary eye diseases (accounting for more than 60%), followed by refractive errors, amblyopia, cataract, corneal disease, retinitis pigmentosa, eye trauma, etc.; blindness and low vision in the elderly Major eye diseases of vision: cataract, keratopathy, glaucoma, age-related macular degeneration, diabetic retinopathy. It is worth noting that high myopia retinopathy has quietly become another "invisible killer" of vision loss in recent years! What do we need to do to protect the "windows to the soul"? Early diagnosis: If you find that your eyes are uncomfortable in your life, seek medical attention in time. Don’t wait for a minor illness to become a serious illness, which leads to regrets that you cannot treat it. (Sudden loss of vision, deformation of things, red eyes, swelling pain, trauma, etc. Seek medical attention as soon as possible!) Early prevention and control: Develop good eye habits, reduce the use of mobile phones and computers, exercise more outdoors in natural light, and form a healthy lifestyle . Early treatment: Strictly control blood sugar, blood lipids, and blood pressure. Once different diseases are diagnosed, follow up strictly according to doctor's orders, have good treatment compliance, and form a good doctor-patient consultation model.

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