What about dry eyes?

Our eyes, especially the cornea, often rely on lacrimal glands for water supply. By blinking, tears become a layer of "tears" and spread to the cornea to keep the eyes comfortable. The so-called "dry eye" refers to a symptom of leaving tiny scars on the eyes due to the decrease of tears or the decline of lacrimal gland function. In the past, dry eye, cataract, glaucoma and other diseases were mainly common eye diseases of the elderly, but now it is found that more and more young people and white-collar workers often contact computers, televisions and game machines in some cities. According to the investigation of relevant departments, 90% of people who work in front of the computer for more than 3 hours every day have eye problems. This so-called "computer vision syndrome" is a manifestation of dry eye.

1. Clinical symptoms of dry eye

The common symptoms of dry eye are dry eyes, burning pain and more gums; Acid eyes, itchy eyes, fear of light, decreased vision. Other symptoms include headache, irritability, fatigue and difficulty in concentration. In severe cases, corneal softening and perforation will occur, and conjunctival congestion can be seen during examination.

2. Causes of dry eye syndrome

There is a layer of tears between the upper and lower eyelids, which contains substances to protect the eyes from infection. When people blink, tears are evenly distributed on the eyeball, cleaning the dust on the conjunctiva and keeping the eyes bright. The average person's tear secretion will decrease with age, so the incidence of dry eye in the elderly is higher. There are many factors that cause dry eye, including: the decrease of tear secretion after middle-aged and elderly people, eye diseases such as corneal degeneration, blepharitis, trachoma and so on. Various immune diseases and connective tissue diseases, such as rheumatoid arthritis, lupus erythematosus, xerostomia, arthritis syndrome (more common in middle-aged and elderly women); It is caused by certain drugs, such as birth control pills, sleeping pills, sedatives, cough medicines, stomach medicines, etc. ; It may also be caused by vitamin A deficiency.

In recent years, the trend of dry eye is obvious, mainly because in modern life, young people have more and more contact with TV and computers for work and entertainment, and they face the fluorescent screen for a long time, lacking in blinking or letting their eyes rest in time, which affects the secretion of tears in their eyes; Or long-term use of some eye drops, such as vasoconstrictor eye drops, is also easy to form dry eye.

3. How to prevent dry eye?

(1) The best way to effectively prevent dry eye is to develop the habit of blinking more. Professionals believe that dry eye is a stress-type disease, and the problem lies in the eyes staring at one direction for a long time. Therefore, the best way to avoid eye fatigue is to rest properly and avoid continuous work. If you are an optician, it is very important to match a pair of suitable glasses. People over 40, it is best to use bifocal lenses, or wear glasses with low degree when typing. 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 30o. Such an angle can relax muscles and minimize the area of the eyeball surface exposed to air.

(2) Long-term computer operators should eat more fresh vegetables and fruits and increase the intake of vitamins A, B 1, C and E. In order to prevent dry corneas, dry eyes, decreased vision and even night blindness, computer operators should eat more foods rich in vitamin A, such as bean products, fish, milk, walnuts, vegetables, Chinese cabbage, water spinach and tomatoes. 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. 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.

(3) In order to avoid the fluorescent screen from reflecting or being unclear, the computer should not be placed on the opposite or back of the window, and the ambient lighting should be soft. If there are windows behind the operator, curtains should be drawn to avoid eye fatigue caused by bright images reflected by direct light on the screen. Usually, the average person blinks less than 5 times per minute, which will make his 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. You should blink more and rest at least once an hour.

(4) In order to reduce the dryness of eyes, corneal nutrient solution can be properly used at eye points. Such as: Befu Shu eye drops, Xiao Laiwei eye drops and some artificial tears. In addition, eye exercises can also relax eye adjustment 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.

So it needs to be reminded that 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 to prevent dry eyes. If you suspect that you have dry eye, you should see a doctor as soon as possible.

Overlooking the green scenery is conducive to moisturizing and nourishing the eyes.

The extensive use of computers, air conditioners and contact lenses has greatly increased the incidence of dry eye; Summer is the season of high incidence of infectious diseases such as acute conjunctivitis.

Computer users should pay special attention to prevention.

Dry eye is a general term, also known as keratoconjunctivitis sicca (KCS) or dry eye. It refers to a kind of disease that the tear film is unstable and the ocular surface is damaged due to the abnormal quality and quantity of tears, which leads to eye discomfort. Its typical symptoms are dry eyes, itching, burning pain, jealousy, foreign body sensation, eye fatigue, blurred or fluctuating vision, and even tears. Some patients with severe dry eye can cause severe vision loss and even blindness.

Nowadays, the widespread use of computers, air conditioners and contact lenses has caused a sharp rise in the incidence of dry eye, especially for young people and computer users, and special attention should be paid to prevention. The following factors can lead to dry eye, so pay special attention. If necessary, you should go to the ophthalmology department and take medicine under the guidance of a doctor.

1.75% of people over 65 suffer from dry eye. Because the generation of tears in the elderly decreases with age. The decrease of tear secretion makes the eyes easily stimulated, which sometimes causes serious tear reaction, that is, tears overflow.

2. Computer users. Staring at the screen for a long time, lack of normal blinking, blinking can make tears better wet your eyes. More than 90% of people who work in front of the computer for more than 3 hours every day have eye problems.

3. Some disease factors. Such as rheumatoid arthritis, diabetes, thyroid abnormality, asthma, cataract, glaucoma and lupus erythematosus.

4. Drug factors. Some drugs can reduce the secretion of tears, leading to dry eye symptoms, such as antidepressants, antihistamines, diuretics, antihypertensive drugs, anesthetics, anti-ulcer drugs and so on.

5. People who wear contact lenses. Contact lenses float on tears, and wearing contact lenses will accelerate the evaporation of tears. The discomfort and poor tolerance of wearing contact lenses are mainly caused by dry eyes. Soft contact lenses, in particular, will quickly evaporate tears, resulting in foreign body sensation, making protein precipitate on the lens. On the other hand, dry eye will reduce the corneal damage resistance of people wearing contact lenses, making it easier for contact lenses to scratch the cornea.

6. Environmental factors. Smoke, ultraviolet rays, air pollution, high temperature, air conditioning and dry climate will all increase the evaporation of tears, leading to dry eye.

7. Women in menopause, pregnancy and lactation and oral contraceptives. Dry eye symptoms may be caused by changes in hormone levels.

8. Long-term use of certain eye drops. Such as vasoconstrictive eye drops, it is also easy to form dry eye.

9. Meibomian gland dysfunction and lacrimal punctum obstruction. Reduce the secretion and discharge of tears, leading to dry eye.

10. In recent years, the trend of dry eye is obvious. Mainly due to the fact that in modern life, young people are exposed to more and more televisions and computers for work and entertainment, and face the fluorescent screen for a long time, lacking in blinking or letting their eyes rest in time, which affects the secretion of tears in their eyes.

Ten measures to prevent and treat dry eye

1. Blink more People always like to use "not blinking" to describe a person's concentration, but they don't know that the fewer blinks, the easier it is to get dry eye. Because blinking contributes to the secretion and distribution of tears, the number of blinking is small, which directly leads to the decrease of tears, and the tear film exposed to the air will evaporate rapidly, losing the protection of the eyeball. So use your eyes for a long time, such as operating the computer, driving, reading and so on. , can cause dry eye.

Blinking is a protective nerve reflex action, and the tear layer can make tears evenly distributed on the surface of cornea and conjunctiva, keeping them moist but not dry. Normal people blink about 20 times a minute.

2. Pay attention to eyelid hygiene. Pay attention to eye hygiene, wash your hands frequently and don't rub your eyes with your hands. Especially at present, in the high season of influenza A (H 1N 1), acute conjunctivitis and other infectious diseases, your hands can be used as a vector to spread germs. Rest with your eyes for an hour or so, close your eyes and look at the distance, or look at the green plants and pictures. For patients with eyelid debris and falling off, attention should be paid to maintaining eyelid hygiene.

People who use computers for a long time should pay attention to the symptoms of dry eyes of young people and seek medical treatment as soon as possible. People over 40 years old had better use bifocal lenses, or wear glasses with low degree when typing. Try to keep the distance from the computer above 60 cm, so that the line of sight can be kept down about 30 degrees, which can relax the neck muscles and minimize the area of the eyeball surface exposed to the air.

Long-term computer users should eat more fresh vegetables and fruits, and increase the intake of vitamins A, B 1, C and E. In order to prevent dry cornea, decreased vision and even night blindness, they 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 .. vitamin B 1 can nourish nerves, and green leafy vegetables contain a lot of vitamin B 1. Drink green tea and chrysanthemum 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.

Advocating wearing contact lenses for a long time will reduce the secretion of tears, so people who wear contact lenses will always feel dry eyes. Prevent dry eye and advocate wearing tangible glasses.

5. Use air conditioner as little as possible. In addition to adjusting the temperature, the air conditioner will dehumidify and reduce the moisture content in the air. In this dry environment, the evaporation speed of tear film is accelerated, which makes the eyes dry. Dry winter is the season of high incidence of dry eye. The weather is hot in summer. In order to prevent dry eye, we should pay attention to opening the window frequently when using air conditioning.

6. Give artificial tears as needed. Note that artificial tears (nutrient solution) should not be over-frequency, preferably no more than 6 times a day. Because if it is more than 6 times a day, it will wash away the normal tear film, thus aggravating the symptoms.

7. The use of eye gel eye ointment has a long storage time in the eyes, but the eye ointment is greasy, the patient feels unsanitary, the vision is blurred obviously, and the acceptability is poor. Ophthalmic gel is an ideal preparation at present. Ophthalmic gel has long storage time in eyes, is very hygienic, has a cool feeling after dripping, is convenient to use and has good acceptability.

8. Use a towel dipped in water above body temperature but not too hot for eyelid cleaning and hot compress. Close your eyes and apply it to your eyes for about 10 minutes each time. It is best to do it once in the morning, because the meibomian gland secretes the most at night and retains the most secretions. Hot compress can help drain the retained secretions. You can do it several times a day, and the effect is good.

9. Placement of lacrimal punctum embolization For moderate and severe patients who need artificial tears 4 to 5 times a day, obstruction of lacrimal passage can relieve symptoms and reduce the amount of artificial tears. Placing collagen plugs in the upper and lower lacrimal passages can temporarily block the lacrimal punctum.

10. Chinese medicine treatment is generally oral administration or local application of Chinese medicines such as clearing heat and nourishing yin, promoting fluid production and moistening dryness, which can treat dry eye.

Dry eye, also known as conjunctival dryness and keratitis, is characterized by dry eyes, foreign body sensation and burning sensation; Blurred vision, fatigue, photophobia, vision fluctuation, headache, irritability, fatigue, difficulty in concentration, and intolerance to the environment with smoke and dust. Dry eye can't be cured at present, and artificial tears are often used to relieve symptoms in clinic. At present, there are millions of patients suffering from dry eye all over the world. With the popularization of computer TV, the number of patients with dry eye is also increasing. The following is a prescription for the treatment of dry eye to help you prevent and improve dry eye.

1, lily and jujube porridge: lily 10g, yam 15g, coix seed 20g, jujube (peeled) 10g. Wash the above materials and serve with porridge.

The therapeutic effect of this prescription for dry eye: lily nourishes yin and reduces fire; Yam nourishes kidney and moistens lung; Coix seed promotes diuresis, strengthens spleen, clears heat and expels pus; Jujube is known as a natural vitamin pill, which is not only rich in vitamin C, but also contains a lot of vitamin A. This porridge is not only effective for preventing and treating dry eye, but also for improving eyesight.

2. Chrysanthemum tea: add medlar to chrysanthemum tea for soaking.

Efficacy of this prescription for treating dry eye: It is recorded in Compendium of Materia Medica that chrysanthemum is "sweet in nature, cold in taste, and has the effects of dispelling wind and clearing heat, calming the liver and improving eyesight". Modern pharmacological analysis shows that chrysanthemum is rich in vitamin A, which is an important substance to maintain eye health. Chrysanthemum tea can make people clear-headed and bright-eyed, especially for dry eye caused by excessive use of eyes.

It should be noted that chrysanthemum is cool, deficient in cold constitution, usually afraid of cold, and people who are prone to cold hands and feet should not drink it often.

3. Walnut kernel: Chew two pills every night to relieve symptoms.

Efficacy of this prescription for treating dry eye: Walnut kernel is rich in fatty oil, vitamin A, vitamin B 1, vitamin B2, vitamin C, vitamin E and other nutrients, and has the effects of tonifying kidney, arresting sperm, nourishing liver and improving eyesight.

4. Lycium barbarum:15g per day, washed, chewed or boiled.

The function of this prescription for dry eye is that Lycium barbarum can nourish yin and improve eyesight, promote the repair of diseased cornea and improve the disease resistance of the body.