Gross disease: computer eyestrain Xiao Zhang is a foreign company’s business director, working 8 to 10 hours a day in front of the computer, and after work to surf the Internet for a few hours at home. In the past six months, he began to look at the computer when the eye stinging, foreign body discomfort, and in severe cases, orbital distention, headache discomfort. At the end of the year, the company’s overtime has become a routine, Zhang felt in recent days that his eyes are almost difficult to cope with the work, now even half an hour with the computer, the above symptoms began to appear, and even began to appear red eyes, tears. Because work is too busy, Zhang did not go to the doctor, just go to the nearby drugstore to buy eye drops to drops. He repeatedly used n eye to eliminate fatigue eye drops, are just a little effect, a long time is not effective; but a stop the drops, eyes seem to be more uncomfortable than before, “is not already dependent on drugs”, he is so worried about himself. In fact, Zhang’s symptoms are typical symptoms of visual fatigue. It is a group of diverse performance, seriously affect the visual quality of common eye diseases, mainly manifested as eye dryness, foreign body sensation, burning sensation, photophobia, tearing, eye redness, eye swelling, headache, blurred vision, reading difficulties, work and learning efficiency decline and other symptoms, serious cases can also appear nausea, dizziness discomfort. The cause of visual fatigue is also multifaceted, similar to the case of Xiao Zhang, it is likely that the computer terminal syndrome. Many white-collar workers will also have similar experiences. This is a group of systemic symptoms due to prolonged operation in front of the computer and look at the fluorescent screen, in addition to eye fatigue, but also accompanied by arm numbness and low back pain and discomfort, neurasthenia memory loss, loss of appetite, decreased resistance and other performance, in addition to eye and muscle and joint strain causes, but also with the work pressure, fast-paced mental tension factors. Countermeasures: ① work time separated by 50 minutes to 1 hour regular intermittent breaks of 5-10 minutes; ② reasonable desk and chair height, correct and comfortable posture and environmental lighting; ③ regular physical activity, at least twice a week, no less than 20 minutes each time; ④ regular sitting time and a balanced diet, no smoking and less alcohol; ⑤ eye hot compresses and eyelid massage ⑥ drops of artificial tears without preservatives In addition to computer terminal syndrome In addition to computer terminal syndrome, the following conditions may also cause visual fatigue: Gross disease: eye refractive abnormalities 31-year-old Ah Ming is engaged in office text work, recently often feel sore eyes discomfort, reading books or computer often “jump words” “jump line”, reading efficiency decreases, continuous Reading for half an hour began to feel fatigue, colleagues often say he frowned squinting at people, but Amin has been one of the few classes during the study without glasses can see the blackboard “handsome”, so have not considered their vision problems. Later, after the dilated eye exam, the vision of both eyes was 0.6, squinting eyes can see 1.0, both eyes have 50 degrees of myopia and 125 degrees of astigmatism, wear glasses after the eye fatigue symptoms improved significantly. Astigmatism, mild myopia, hyperopia, and refractive error (difference in refractive error between the two eyes greater than 250 degrees). The younger the patient is, the stronger the eye’s ability to adapt and the more tolerant it is to refractive abnormalities, so the patient is often asymptomatic for a few years at first, and visual fatigue gradually appears within a few months to six months and progressively worsens, mostly after a period of overtime or illness and weakness. Mild to moderate refractive abnormalities are often the common cause of visual fatigue, because mild to moderate refractive abnormalities have less impact on vision, people feel that their eyes can still see clearly and ignore the problem. Countermeasures: The above problems can be detected through regular optometric examinations. Normal visual acuity alone does not mean that there is no problem with the refractive state; many patients with astigmatism, hyperopia and refractive error may have 1.0 or even 1.5 vision. Some people have visual fatigue due to inappropriate eyeglass wear, especially overcorrection, which mostly occurs after new or replacement eyeglasses, and should be refitted after regular optometrist’s examination. Gross disease: eye adjustment function decline 45-year-old Ms. Zhang, senior company finance director, recently a period of time every day when working difficulties in looking at the financial statements, look up to see things in the distance blurred, it takes a while to slowly become clear. She also had frequent eye swelling, dizziness, nausea and discomfort. After refractive examination, she was found to have 125 degrees of presbyopia in both eyes, and her symptoms disappeared after prescription of presbyopia glasses. People often compare the eye to a camera. Adjustment power is equivalent to the zoom ability of a camera, enabling us to see objects from a few centimeters in front of us to very far away; if the adjustment power is insufficient or too strong, it will produce fatigue symptoms. Synchronized and coordinated movements of both eyes ensure fast reading and sharp stereoscopic vision, while strabismus, cryptopia, convergence disorders and even monocular suppression can increase the burden on the eyes. Countermeasures: As we grow older, eye adjustment ability will decline, such as age over 40 years old, the adjustment ability of the human eye began to decline significantly and the symptoms of presbyopia, long time reading or computer will appear eye swelling headache discomfort, should be equipped with presbyopic glasses. As for the synchronized and coordinated movement of both eyes, it can be treated by targeted training or wearing glasses under the guidance of a doctor. The first thing you need to do is to take a look at the website. After a period of regular rest, hot compresses on the eyes and treatment with preservative-free artificial tears, he recovered. A thin layer of tears evenly coated on the surface of the eye is an important structure that protects, lubricates and nourishes the eye, just like the lubrication system of a car engine. If a car with a problematic lubrication system is driven for a long time, you can imagine what consequences it will have on the car. Dry weather and air conditioning can cause tears to evaporate too quickly; long-distance driving, long time looking at the computer screen will reduce the number of blinks, affecting the tear coating; some diseases of the eye and the body will reduce tear secretion and cause dry eye symptoms, such as rheumatic diseases. Long-term unregulated use of anti-inflammatory and anti-fatigue eye drops, drug-related dry eye produced by the toxic effects of drugs and preservatives in drugs, should draw our attention more. Countermeasures: Dry eye can be diagnosed in the ophthalmology clinic by tear function examination, and depending on the type of treatment by hot compresses, artificial tears, tear duct plugs, etc. Some patients need to be treated at the same time ministry treatment eye and systemic related problems in order to remove the cause of the disease. Gross disease: adjacent organs have diseases Mei, who is in her senior year of high school, suffers from chronic allergic rhinitis. Due to homework tension, she always feels visual fatigue, heavy head and eye swelling, pressure and discomfort in the arch of the eyebrow during classes, and often tears, which will improve during sports activities, and after ophthalmologic examination to exclude eye pressure, fundus and refractive problems, and after a period of insistence on medication by ENT doctors, her symptoms improved significantly. Paranasal sinusitis and migraine headaches are also common causes of visual fatigue. Paranasal sinus is a bony cavity located around the eye orbit. Inflammation caused by allergic rhinitis or cold and flu leads to trigeminal neuralgia, which is characterized by soreness and discomfort in the orbital arch of the eyebrow, decreased self-concentration, and even nausea and irritability. Countermeasure: Patients should promptly visit the ENT department for treatment after excluding ophthalmic diseases. It can be seen that the causes of visual fatigue are multifaceted and cannot be solved by simple anti-fatigue eye drops, and long-term use of unsuitable eye drops will instead increase the burden on the eyes. The key is to identify the causes as early as possible and treat them actively.