1. Solid keratoxerosis conjunctiva: It is caused by extensive scarring of eyelid conjunctiva and bulbar conjunctiva, which destroys the secretory gland of conjunctiva itself, even lacrimal gland and lacrimal passage. Such as severe trachoma, extensive thermal or chemical burns, severe chronic conjunctivitis and pemphigoid.
2. xerophthalmia-arthritis syndrome (or "dry eye syndrome"): this is a disease with unknown etiology, which has only been discovered in recent years and may be caused by congenital immune system abnormality. The main manifestations are keratoconjunctivitis sicca, xerostomia and connective tissue disease (the most common is rheumatoid arthritis).
3. xerosis conjunctivae: this is one of the eye manifestations of vitamin a deficiency. The main reason of vitamin A deficiency is the high consumption and low intake of vitamin A in the body. It is more common in infants who are improperly artificially fed, and malabsorption or consumptive dysentery such as measles, pneumonia, disease and diarrhea is easy to occur. Adults are more common in patients with advanced liver cancer, liver cirrhosis and long-term chronic digestive tract diseases.
"Dry eye", or conjunctival dryness and keratitis (dry angle, conjunctivitis), is a disease in which the conjunctiva and corneal epithelium can't maintain their normal functions due to the insufficient quality of the tear film before the cornea or the insufficient amount of tears.
Dry eye is a chronic disease for the following reasons:
1. Due to old age, lack of sleep, mental stress and other physiological reasons, the quality of tears decreased.
2. Taking some antihypertensive drugs and some antipsychotics has an effect on tear film. For example, taking chlorpheniramine has a bad effect on tear film. At present, taking propranolol and some birth control pills can reduce the production of tears.
3. Dry rooms and other environments lead to increased evaporation of tears.
4. I have been engaged in computer operation, car driving, reading and other fine operations for a long time, and the number of blinks has decreased.
5. Due to contact lenses, allergic conjunctivitis, air pollution, ultraviolet rays and other reasons, tears are reduced and the quality is reduced.
6. Long-term use of antibiotics, flora imbalance.
If the eyes feel abnormal in daily life, please check whether there is "dry eye". By paresthesia, we mean that patients with dry eye are sensitive to airflow, and they are particularly prone to corneal dryness in windy environments. So, you are much more comfortable indoors than outdoors. When the patient's attention is focused, the blink frequency decreases, and the cornea is exposed to the air for more than the tear film rupture time, so the dryness is particularly obvious. When I wake up at night or early in the morning, my eyes feel dry and serious, because there are fewer tears during sleep. For patients with insufficient tears, smoke is almost unbearable, because smoke itself is powder suspended in the air, which directly impacts the corneal surface and causes discomfort.
In addition, it should be understood that dryness and less tears are not specific symptoms. On the contrary, some people with dry eye will complain about tears or tears overflowing, which may sound contradictory, but in fact, dry eye may stimulate the reflex secretion of tears, just like foreign bodies or abrasions on the eye surface.
In the face of complications such as decreased vision caused by dry eye, which seriously damages eye tissues and may even lead to blindness, the first thing to do is to strengthen prevention in daily life and improve modern people's awareness of self-care for eyes.
One more thing. Personally, I think if you know, you have to know why.
The solution is as follows:
1. You don't want to go to the hospital, but when you find that the symptoms are serious or persistent, you really need to be diagnosed and treated by an ophthalmologist. If it is diagnosed as dry eye, it should be treated with drugs in strict accordance with the doctor's advice; If it is visual fatigue caused by discomfort of glasses or contact lenses, you can reconfigure appropriate glasses according to the prescription of glasses prescribed by ophthalmologists, and pay attention to eye health care in daily life.
2. Paying attention to eye care in daily life can alleviate the symptoms of dry eye, such as paying attention to mental relaxation at ordinary times and taking a proper rest when feeling tired eyes; Try not to look up, put the TV or computer below eye level, watch TV or use the computer for too long; Desk and computer monitors should be placed in places that are not exposed to direct sunlight, because the images of reflected illumination light will cause eye fatigue; Keep the room at a certain humidity.
Of course, the most direct way to solve dryness is to make your eyes moist, and the healthiest way is to yawn. If you can't do it, drop artificial tears.
.
4. Eat more vitamin A Chrysanthemum is rich in vitamin A, which is an important substance to maintain eye health. Therefore, it is also a good medicine for Chinese medicine to treat various eye diseases. Chrysanthemum tea can make people clear-headed and bright-eyed, especially for dry eye caused by excessive use of eyes. People who often feel dry eyes, especially those who often use computers, might as well drink more chrysanthemum tea. When the air is dry, many people always feel that their eyes are dry and sour, but for white-collar workers who stare at computers all day, their eyes are sour and dry. Recently, some white-collar forums recommended going to a beauty salon to "wash your eyes". Many netizens said that their eyes were cool and comfortable after washing. Is it really good to wash your eyes often? Is this a good habit to protect your eyes? In medicine, there is no such thing as "eye washing". Generally speaking, only patients who need eye surgery, eye trauma caused by acid and alkali burns or serious eye diseases such as conjunctivitis and corneal foreign bodies need to be washed with normal saline or disinfectant, which is called "conjunctival sac washing". Eye washing requires very high environment, technology and medicine. If the disinfection of eye washing equipment is not strict, it will also cause eye damage or infection with conjunctivitis, trachoma and other eye diseases. Most eye washes are made up of artificial tears, cellulose and some vitamins, and some things with nutrition, sterilization, anti-inflammatory components and antiseptic components are added. Its composition is far from natural tears, and their pH, pH and osmotic pressure are also different. For healthy eyes, tears are the best eye care solution, because tears can keep the cornea moist and clean and protect the conjunctival sac. The chemical composition of tears is very complicated. In addition to water and electrolyte, there are nitrogen-containing substances, sugars, organic acids, vitamins, enzymes, lipids and other components. Lysozyme is a natural antibacterial substance, and many immunoglobulins perform nonspecific and specific immune functions. These are unmatched by artificial eye washes. If the tear secretion is insufficient and the quality and quantity of tear film are abnormal, it will cause dry eye, also known as corneal dryness and conjunctivitis. Symptoms are dry eyes, itching, burning sensation and fatigue. For example, indiscriminate use of eye drops, indiscriminate use of eye drops, and indiscriminate washing of eyes can not only protect the eyes, but also easily cause harm to the eyes! The water on the surface of the eyes evaporates quickly, so pay attention to hydrating, and eat more soy products, fish, milk, vegetables, Chinese cabbage, spinach, tomatoes, fresh fruits, etc., which will help protect the eyes. Pay attention to eye hygiene. Whether reading a book or using a computer, don't concentrate for too long. You should blink more consciously, rest every 30 to 40 minutes 10~ 15 minutes, look into the distance and let your eyes relax fully. People who work in front of the computer often feel dry eyes, redness and pain. If you eat a banana every day, it can play a certain role in alleviating it. This was told to readers by an article on Taiwan Province Sweet Potato Vine Health website a few days ago. It is pointed out in the article that the protective effect of banana on eyes is first related to its rich potassium. Excessive salt intake will lead to a large amount of water remaining in cells, causing red eye. Potassium in bananas can help the human body to discharge these excess salts, so that the body can achieve a balance of potassium and sodium, and relieve eye discomfort symptoms. In addition, bananas contain a lot of beta carotene. When the human body lacks this substance, the eyes will become painful, dry, dull and dehydrated. Eating more bananas can not only relieve these symptoms, but also relieve eye fatigue to some extent and avoid premature aging. (Zhang Jing) I believe that every beautiful MM wants others to praise her for her bright eyes and bright teeth. However, in the E era, there are fewer and fewer "bright and charming" eyes, and the once moving eyes are dry and unbearable. What do we do? Diseases that make our eyes moist-eyes are very unique and magical organs. There is a tear layer between the upper and lower eyelids, which contains substances that protect the eyes from infection. When people blink, tears are evenly distributed on the eyeball, which can clean the dust on the conjunctiva. Tears are more important to the cornea, which can ensure that the windows are bright and clean and make us look bright.
The so-called dry eye syndrome, as its name implies, refers to a disease in which the eye surface cannot be kept moist due to the decrease of tears or the decline of lacrimal gland function, thus leaving tiny scars on the eyes. The common symptoms of dry eye are dryness, burning pain, fatigue and sandy foreign bodies. Acid eyes, itchy eyes, fear of light and vision loss, tight eyelids, heavy feeling, sensitivity to external stimuli, and temporary blurred vision. Other symptoms include headache, irritability and difficulty in concentration. In severe cases, corneal softening and perforation will occur, and doctors can see conjunctival congestion when they check. The average person's tear secretion decreases with age. Five reasons for the prevalence of dry eye in e era 1. Now the air conditioning system is installed in the office, so the humidity is low and the air is not circulating, which further accelerates the evaporation of tears. 2, contact lens family, this is the main cause of acquired "dry eye". 3. After excimer laser surgery, the eyes are dry and have foreign body sensation. During the examination, it was found that the secretion of tears decreased for a period of time after operation. 4, long-term use of some eye drops, such as vasoconstrictor eye drops, temporarily feels comfortable, but in fact, some eye drops we commonly use contain preservatives, hormones and antibiotics, and the damage to the eyes after long-term use is irreparable! It is also easy to form dry eye. 5, under normal circumstances, the average person blinks less than 5 times per minute will make the eyes dry. When a person works in front of a computer, he blinks only one-third of the usual frequency, thus reducing the secretion of lubricants and enzymes in his eyes. Self-detection of dry eye
Some signs of eye discomfort in life may mean that you are facing the threat of dry eye. If your eyes have the following discomfort, please take some corresponding preventive measures to ensure that your eyes are bright and moist. Do you often feel dry eyes?
2. Do you have foreign body sensation in your eyes?
3. Are your eyes afraid of light?
4. Your eyes hurt a little?
5. Do you feel burning eyes?
6. Are your eyes tired?
7. Can you keep your eyes open 10 seconds without blinking? Prevention of dry eye 10 entry: dry eye occurred frequently in e era. When the cause is found, there is a way to prevent it. The best way to effectively prevent dry eye is to develop the habit of blinking more. Avoid eye fatigue and have a proper rest. 1. If you are an optician, it is very important to wear a pair of suitable glasses. Wear glasses with low degree. 2. Working posture and distance are also important. Try to keep a distance of 60CM, adjust the most suitable posture, and keep the line of sight down about 30 degrees. Such an angle can relax muscles and minimize the area of the eyeball surface exposed to air. 3. Long-term computer operators should eat more foods rich in vitamin A, such as bean products, fish, milk, walnuts, vegetables, Chinese cabbage, water spinach, tomatoes and fresh fruits. Vitamin c can effectively inhibit cell oxidation. The main functions of vitamin E are: lowering cholesterol, removing garbage in the body and preventing cataracts. Walnuts and peanuts are rich in vitamin E, and vitamin B 1 can nourish nerves. Green leafy vegetables contain a lot of vitamin B 1. Avoid irritating diet. 4. You can drink green tea properly every day, because lipopolysaccharide in tea can improve the hematopoietic function of the body, and tea also has the function of preventing radiation damage. 5. Don't put the computer on the opposite or back of the window, and the ambient light should be soft. If there is a window behind the operator, the curtain should be closed to avoid bright light directly shining on the screen, reflecting bright images and causing eye fatigue. 6. You should blink more. When you concentrate on the computer screen, the number of blinks will decrease. I suggest you blink more to ensure that the "tear film" can disperse water to the cornea. Rest your eyes at least once an hour. 7. Appropriate use of corneal nutrient solution at eye points. Such as: Befu Shu eye drops, Xiao Laiwei eye drops and some artificial tears. 8. Eye exercises can also relax the adjustment of eyes and reduce visual fatigue. The essence of eye exercises is self-massage, that is, by self-massaging the acupoints and skin muscles around the eyes, the blood circulation in the eye socket is increased, the nerve nutrition is improved, and the hyperemia of the brain and eyeball is eliminated. Because of the smooth circulation, the intraocular accommodation muscle can eliminate the accumulated metabolites, thus achieving the purpose of eliminating eye fatigue. 9, change the lifestyle, don't stay up late ◎ Eye hot compress, 3-4 times a day, 5- 10 minutes each time ◎ Pay attention to the cleaning of eyelid margin ◎ Have blepharitis, and may need oral antibiotic treatment. 10. Diseases on the surface of eyeball, such as inflammation, sensitivity, injury or pathological changes of cornea, conjunctiva and eyelid, need to be actively treated by ophthalmologists. Tip: Eyes with normal tear composition and function have a thin tear film covering the cornea and conjunctiva. This film can be subdivided into three layers from outside to inside: oil layer, water-liquid layer and mucin layer. Grease layer: secreted by meibomian gland (a sebaceous gland) of eyelid, its main function is to delay the evaporation of water layer, increase the surface tension of tear film and lubricate the contact surface between eyelid and eyeball. Aqueous humor layer: secreted by lacrimal gland and accessory lacrimal gland, accounting for most of the tear film. Its main function is to provide smooth surface for eyes, supply oxygen to corneal epithelial cells, sterilize and remove metabolites. Mucin layer: secreted by conjunctival goblet cells, its main function is to make corneal epithelial cells change from lipophilic to hydrophilic, so that aqueous humor layer is evenly distributed on the surface of eyeball. September is the season when chrysanthemums bloom every year, and the sky is crisp. It is also the best season for tea people to start picking chrysanthemums to make chrysanthemum tea.
A small chrysanthemum has led to many well-known poems by poets of past dynasties. Jiao Ran, a poet in the Tang Dynasty, was the grandson of Xie Lingyun in the Eastern Jin Dynasty. He didn't ask politics all his life, but only paid attention to pastoral poems and tea ceremony poems. He is Cha Sheng Lu Yu's closest friend. When drinking tea together, he entertained him with poems: "Jiuri Mountain Zen Temple, Dongli Chrysanthemum is yellow. The laity is full of wine, who can help tea. " Tao Yuanming returned to the field after ten days as an official. He loved chrysanthemums and was indifferent to officialdom. He is free. His "picking chrysanthemums under the east fence and seeing Nanshan leisurely" pinned his feelings for mountains and rivers. The elegance of chrysanthemums, without makeup, has great medicinal value. It seems that these hermits are willing to be indifferent to farming, but they do not forget the excellent quality of caring for the country and the people, which makes people respect.
Chrysanthemum is not only pleasing to the eye, but also can be made into health tea. At the end of each year 10, when chrysanthemums are in full bloom, pick chrysanthemums from Tongxiang County, Huzhou City, Zhejiang Province and Florists Chrysanthemum, the top of Huangshan Mountain, steam-deactivate them, dry them until the water content is below 70%, and crush the petals by hand for later use. There are also chrysanthemums produced in Bozhou, Anhui, Chuju in Chuzhou, Chuanju in Zhongjiang, Sichuan, and Deju in Deqing, Zhejiang, all of which have high efficacy. "Compendium of Materia Medica" recorded in detail the efficacy of chrysanthemum tea: sweet in nature, cold in taste, and effective in dispelling wind and clearing heat, calming the liver and improving eyesight. According to Shennong's Classic of Materia Medica, chrysanthemum tea can "cure dizziness, swelling and pain, drowsiness, dead skin, aversion to rheumatism, joint pain, benefit qi for a long time, be intellectual and hardworking, and prolong life." What I want to mention here is Florists Chrysanthemum, which grows in the fog of Shan Ye, inherits the aura of Huangshan Mountain and absorbs the essence of mountains and rivers in southern Anhui. Its pollution-free nature has high drinking value for modern people.
When soaking chrysanthemum tea, it is best to use a transparent glass, put four or five capsules at a time, and then brew with boiling water. If there are many people drinking, you can use a transparent teapot, put a handful at a time, soak in boiling water for 2-3 minutes, and then pour the tea into everyone's transparent glass. When drinking chrysanthemum tea, you can put a few crystal sugar in the cup to make it sweeter. Chrysanthemum tea has a certain curative effect on dry mouth, intense fire and astringent eyes, or limb pain and numbness caused by pathogenic wind, cold and dampness. Healthy people can also drink boiled water as boiled water. Every time you drink, don't drink it all at once. Save the third cup of tea, add new tea, soak for a while, and then drink. Chrysanthemum tea is widely loved by people for its efficacy. Modern science has been able to extract the effective components from chrysanthemum and make it into drinks such as chrysanthemum crystal and chrysanthemum cola, which is more convenient and saves time for people who like to drink quickly. Chrysanthemum tea is a kind of tea drink suitable for all ages.