Blindness caused by visual impairment not only causes great pain to patients, but also increases the burden on families and society. Many people don't know why people are blind. The following is what I brought about the causes of blindness. Welcome to read it!
I: cataract
Cataract is the main cause of blindness. It is estimated that 20 million people in the world are blind. At present, half of the blind people in China are caused by cataract. The number of cataract operations per million people every year is called the cataract surgery rate. In the surgical treatment of cataract, it should be emphasized that:
1. Enable patients to achieve a high success rate of restoring vision and quality of life;
2. Provide affordable and accessible services to patients, especially among people who lack medical care and medicine;
3. Take measures to increase the utilization of existing cataract surgery facilities. The measures adopted are to coordinate work, train personnel and strengthen management, monitoring and evaluation of service quality.
II. Trachoma
Trachoma is a common disease in the developed areas of the Ministry of social economy in the world, which lacks basic living needs such as housing, water and sanitation facilities. Trachoma is still a serious blindness disease in China, especially in rural and remote areas. For the prevention and treatment of trachoma, we mainly adopt the prevention and treatment policies of surgery, antibiotics, facial cleaning and improving the environment, which should be actively adopted.
III. child blindness
It is mainly caused by vitamin A deficiency, measles, neonatal conjunctivitis, congenital or genetic eye diseases and retinopathy of premature infants. The causes of child blindness vary from country to country. In China, children's busy blindness is mainly caused by congenital and genetic eye diseases. We should strengthen publicity, pay attention to health care during pregnancy, avoid close relatives' marriage, carry out genetic counseling and advocate eugenics and good parenthood, which can effectively reduce the occurrence of such eye diseases. At the same time, we should also pay attention to the prevention and treatment of vitamin A deficiency and retinopathy of premature infants in some areas.
Four: ametropia and low vision
China is a high incidence area of myopia. Therefore, we should further strengthen the understanding of myopia and other factors, train enough optometrists and popularize optometry facilities, so that patients with ametropia can get timely and appropriate refractive correction.
I. retinal vascular occlusion: retinal artery or vein occlusion can cause sudden blindness or severe visual impairment. If the disease is treated within two hours, vision is expected to recover, otherwise it can lead to permanent blindness. This disease often occurs in patients with hypertension, arteriosclerosis, heart disease and diabetes, and emotional agitation is an important inducement.
Two. Vitreous body hemorrhage: common in hypertension, arteriosclerosis, retinal vein occlusion and diabetes complicated with fundus disease, often occurs when emotional overexcitation occurs. In addition, severe changes in body position in patients with high myopia can also be induced, especially when the head is low.
III. acute congestive glaucoma: the main symptoms of acute congestive glaucoma are redness and swelling of the eyes, pain, tears, sharp decline in vision, accompanied by migraine on the affected side, nausea and vomiting and other symptoms. It is often misdiagnosed as a "gastrointestinal" disease and can not be treated in time. Sometimes it is even misused with atropine and other antispasmodic agents to dilate the pupils, which undoubtedly worsens the situation and aggravates the condition.
① if there is arteriosclerosis or heart disease, prescription treatment should be strengthened;
② some people have premonitory symptoms before their illness, and have paroxysmal blindness. They can't see clearly within a few seconds or minutes, and then naturally recover consciousness. If this phenomenon is found, they should seek medical treatment in time. Fundus and vitreous body hemorrhage will suddenly feel dark and smoky before. Sometimes, black or red objects can be seen fluttering before the eyes. The causes of this disease are mainly seen in hypertension, atherosclerosis, diabetes, etc.
Guess you're interested:
1. What are the hazards of children's poor eyesight to their growth
2. What are the causes of cat eye diseases
3. How to prevent eye trauma
4. What are the eye diseases? What are the eye diseases
5. How does glaucoma form