Computer operation should be kept at a distance of 60 centimeters or more, with the line of sight downward at about 30 degrees. With the advancement of technology, operating computer terminals is almost an inevitable part of modern life. A variety of computer games are deeply attracted to the majority of young people, and there are many people because of their work, such as programmers, counter attendants, bank operators, information center workers, paperwork processors, etc., must also face the computer all day long, looking at the computer fluorescent screen, in the long run, the eyes will easily appear fatigue. In the ophthalmology clinic, we can often hear patients complain of eye fatigue or headache, in which the use of computer terminals accounted for the majority. Eye fatigue is a subjective feeling, strictly speaking can not be regarded as a disease, the diagnosis is based solely on the subjective complaints, it is difficult to use objective instrumentation to find the real problem. Most patients complain of dryness, burning, or a foreign body sensation in the eyes, unstable or temporarily blurred vision, and may also feel heavy eyelids, eyeball swelling and pain, or even headaches. Nevertheless, through detailed ophthalmologic examination, some clues can still be found, such as conjunctival congestion, vision loss, loss of accommodation, reduced tear secretion, etc., and in severe cases, there may even be an increase in intraocular pressure. According to clinical surveys, about 70% of terminal operators suffer from eye fatigue, while about 30% of non-terminal operators do. The degree of eye fatigue is closely related to the length of the working time, and has nothing to do with the nature or content of the work, that is to say, no matter whether you are playing the game, or engaged in clerical work, the school team, the cashier or the counter attendant work, as long as the operation of the computer reaches a certain period of time, it will produce eye fatigue symptoms. Caused by eyeglasses fatigue factors, generally speaking can be roughly summarized as the following reasons: glasses refraction is not appropriate: the degree is too deep, or have a high degree of astigmatism. If the prescription of the glasses is not correct, or because of the distortion of the frame, resulting in the pupil distance is not correct, may therefore aggravate the burden on the eyes and the symptoms of eye fatigue. Working posture and distance: working distance is too close or incorrect posture, too close to the computer fluorescent screen, it is easier to be harmed by radiation, especially when using a laptop computer, due to the screen is too small, resulting in the user must work in close proximity, the head tilted forward, the strength of the muscle force, it is easy to form a work fatigue, aggravate eye fatigue. Screen quality and clarity: some computers because of the use of time too long, resulting in reduced screen quality, clarity decline, resulting in reading difficulties. Working environment: the environment of the light is too strong or too weak, resulting in a strong contrast between the screen and the outside world, easy to cause eye irritation. After understanding the symptoms and causes of eye fatigue, the next step is to introduce ways to improve it. As mentioned earlier, the degree of eye fatigue is related to the length of working time, so the best way to avoid eye fatigue is to take breaks and not to operate continuously. For people over 40 years old, it is best to use bifocal lenses or to wear glasses with a lighter prescription when typing. Working posture and distance is also very important, try to maintain a distance of more than 60 centimeters, adjust a most appropriate posture, so that the line of sight can be about 30 degrees, such an angle can make the neck muscles relax, and minimize the surface of the eye exposed to the air. Whether the brightness and clarity of the screen are appropriate, whether the light of the environment is soft, and whether the height and comfort of the table and chair can match the height of the terminal are all elements that must be considered. If the symptoms of eye fatigue are very serious and cannot be improved, it is necessary to consult an ophthalmologist, with the use of artificial tears or ciliary muscle relaxants to improve the symptoms of eye fatigue. Expert’s tip: Due to the limitations of science and technology, the methods currently used are aimed at correcting visual acuity. Therefore, the so-called treatment for those who are already nearsighted at this stage only hopes to slow down or stop the development of myopia through some methods. To prevent myopia from deepening, attention should be paid to many aspects, firstly, to change some bad habits of reading and close-distance work, and secondly, to minimize the time of forced eye use.