1.Introduction
The term asthenopia is derived from a Greek expression that originally meant “weak eye”. It generally refers to a syndrome of subjective symptoms that occur when working with the eyes. Eye drops do not cure eye strain, although some eye drops do relieve the symptoms of fatigue.
2.Symptoms
The symptoms of visual fatigue include eye fatigue, dry eyes, foreign body sensation, heavy eyelids, blurred vision, photophobia and tearing, eye swelling and pain, and eye congestion, etc. In severe cases, headache, dizziness, nausea, depression, lack of concentration, memory loss, loss of appetite, and general syndromes such as neck, shoulder, back pain and numbness of finger joints, etc. A few patients may have diplopia, stereo visual dysfunction, increased intraocular pressure, corneal damage, etc. Adolescents may also suffer from eye fatigue. A small number of patients may develop diplopia, stereopsis, elevated eye pressure, corneal damage, etc. Adolescents may also develop myopia or deepen their original myopia. Patients with glaucoma, ocular surface or anterior segment disease may also suffer from excessive eye strain that can cause or aggravate existing eye disease.
Tip: Each person can also determine for themselves whether they are suffering from visual fatigue, that is, headache, tearing, eye stinging, blurred vision, double vision, eye pain, photophobia, blinking, nausea, eye heaviness in two or more of the 10 symptoms can be diagnosed.
3.Cause
The common causes of visual fatigue are.
1, refractive error. Including myopia, hyperopia, astigmatism is not corrected in time;
2, prescription eye fatigue. Such as nearsightedness is high, farsightedness is not enough, etc.;
3, the diopter difference between the two eyes is too large. Such as 200 degrees of myopia in one eye and 600 degrees of myopia in the other eye;
4, hidden strabismus, extraocular muscle paralysis, eye muscle force imbalance;
5, the elderly due to the decline in regulation to see near objects;
6.Ophthalmic disease. Such as high intraocular pressure in glaucoma, supraorbital neuralgia and paranasal
4.Prevention
When prolonged close reading, reading too small text, engraving, computer operation for too long can cause eye distension, dryness, blurred vision, heavy eyelids and other symptoms of visual fatigue, and in severe cases, headache, orbital pain, and even nausea, vomiting. Sinusitis can cause visual fatigue;. Other symptoms. Excessive brain work, improper height of table and chair when writing, too strong or too weak light, etc.
The following points should be noted in the prevention and treatment of visual fatigue.
First, go to hospital for examination when there are symptoms of visual fatigue to exclude eye diseases and other diseases causing visual fatigue.
Second, eliminate the factors that cause visual fatigue.
Third, adolescents should pay more attention to the symptoms of visual fatigue, go to the hospital in time to find out the cause and early treatment.
Fourth, you can use some eye drops to relieve eye fatigue or follow medical advice. At the same time, strengthening physical exercise and maintaining good physical and mental health can also help prevent visual fatigue.
With the popularity of computer applications, some people begin to go to the hospital due to visual fatigue, dry eyes and vision loss. How to relieve visual fatigue? Experts remind, exercise is the best way to lift the visual fatigue. Long hours of ambulation, close work, excessive use of eye regulation, will add importance to fatigue. Those who use their eyes for a long time should pay great attention to eye care. The best way to relieve visual fatigue is in order: eye movement training, sports, eye exercises, far away, drops of anti-fatigue eye solution.
In general, we should ensure sufficient sleep, combine work and rest, balance diet, eat more cereals, beans, fruits, vegetables and animal liver and other foods, and have a regular life. Eye diseases and other systemic diseases should be promptly diagnosed and treated; pay attention to the regulation and protection of the eyes. Stick eye patch gently close your eyes, put the eye patch on the lower edge of the eyebrows, both sides of the nose, gently smooth the eye patch, so that the eye patch and eye skin full contact with closed eyes rest for 15-20 minutes, relax the body and mind.
1, eye movement training method using a group of near-sighted lenses and a group of farsighted lenses, and constantly alternate reading or computer text, adhere to 10 minutes a day can.
2, eye movement method head to the up and down when the rotation, the eyes also follow along with the movement.
3, blinking method head back and keep blinking, so that the blood flow. When your eyes are slightly tired, just do 2~3 blinks.
4, alternating hot and cold compress method a towel dipped in hot water than the bath water is a little hot, another towel dipped in cold water with ice, first put the hot towel on the eyes for about five minutes, then put the cold towel for five minutes.
5, eye gymnastics middle finger pointing between the eye sockets and the bridge of the nose, palm covering the face back and forth friction for five minutes. Then the neck slowly move around, then close your eyes, make a fist and tap the back of the neck ten times.
6, look far and near method Look at the far side for three minutes, then look at the palm of your hand for 1 to 2 minutes, and then look at the far side again. This exchange of near and far several times, can effectively eliminate eye fatigue.
5.Treatment
For “visual fatigue”, there are more and more convenient solutions on the market today, and more and more people are becoming concerned about their vision health. In this regard, experts from Harvard and Rayner Eye believe that the increasing number of people suffering from “visual fatigue” is a manifestation of modern lifestyle changes and social progress, and the real reason is that people pay attention to their eyes and their own health. Experts say that under normal circumstances, the tears in the eyes will form a film that covers the surface of the cornea and conjunctiva, called the tear film.
After each time a person blinks, a tear film is formed that keeps the eyes moist and comfortable, so it is less likely to produce symptoms such as dry eyes and fatigue. However, if you stare at a target for a long time (such as using a computer or reading a book) for too long, the blink reflex is relatively small and cannot form a tear film in time, which can lead to a dry eye surface and cause visual fatigue.
6.Complications
How does visual fatigue cause myopia?
As we all know, the formation of myopia mainly originates from physical lesions. As a result of close eye use and high intensity eye use, the eyes become visually fatigued. If you are in a state of fatigue for a long time and do not get relief and adjustment, it will easily lead to ciliary muscle spasm, which will squeeze the capillaries in the eye and lead to microcirculation disorder, and eventually become myopia. Visual fatigue can make your eyes nearsighted, dry eyes, swollen and congested, photophobic and tearful, headache and dizziness, dark circles under the eyes, and even insomnia and eye …… ciliary muscle contraction for too long, so that the eyes are in a long-term fatigue myopia pathology, it will occur pseudomyopia.
For pseudomyopia, if not treated early, it will become true myopia, so it must be taken seriously. We can improve eye fatigue by taking vitamins, eating more vegetables and fruits, increasing outdoor sports and looking high and far.
7.Expert advice
1, life should be regular, rest and sleep should be adequate.
2, improve the working environment, lighting light should be moderate, a combination of direct lighting and indirect lighting, so that the brightness around the workpiece is not excessively lower than the brightness of the workpiece.
3, the dry season or the use of air conditioning, indoor to maintain a certain level of humidity.
4, pay attention to eye health. Sitting posture should be upright, see things to maintain the appropriate distance. Avoid long, close, too fine work. When using a computer for a long time, the clarity of the screen should be good, the brightness should be moderate, the distance between the eyes and the screen should be about 60 cm, with both eyes looking flat or mildly down at the fluorescent screen, resting for 5 to 10 minutes every hour of work, trying to look away, relaxing, and blinking more.
5, eat more food rich in vitamin A and B, such as carrots, leeks, spinach, tomatoes, tofu, milk, eggs, animal liver, lean meat, etc.
6, lutein is an important nutrient element present in the eye tissue, with strong oxidative properties, promote eye microcirculation, relieve vision fatigue, dryness and other symptoms. Take some products that contain high levels of lutein such as Yue Pupil Lutein, which can effectively relieve visual fatigue.
7, regular medical checkups, early detection of related diseases and timely treatment. You should go to the hospital to see an ophthalmologist for early detection and eradication of the primary lesion, such as correcting refractive error through glasses and compensating for the defect of exophthalmic strabismus through extraocular muscle training.
8, eye drops to relieve eye fatigue must be used under the guidance of a doctor. Because 90% of the eye drops contain preservatives, these substances can damage the cells on the surface of the eye. Patients with dry eyes are better off choosing preservative-free artificial tears.
9. Patients with systemic organic diseases and psychological disorders should seek the help of a specialist in a timely manner.