Abstract: why is the number of myopia so large. This is undoubtedly inseparable from the change of people’s living habits. Due to the rapid development of information and transportation, people spend less and less time outdoors. On the contrary, they spend more and more time staring at the screen or books.
in recent years, myopia has once become a major problem perplexing global vision health. Australian researchers estimate that in 2000, about 1.4 billion people in the world were short-sighted, accounting for 22.9% of the total global population, of which 163 million were in serious condition.
at present, there are about 2 billion people with myopia among about 7.3 billion people in the world. It is estimated that by 2050, the number of myopia will reach 4.758 billion, accounting for 49.8% of the global population, of which 938 million will be in serious condition.
this is a serious trend, because deep myopia means a greater risk of eye conditions, such as myopic maculopathy, cataract, glaucoma and retinal detachment. These conditions can lead to permanent blindness.
why is the number of myopia so large? This is undoubtedly inseparable from the change of people’s living habits. Due to the rapid development of information and transportation, people spend less and less time outdoors. On the contrary, they spend more and more time staring at the screen or books.
experts explained that the occurrence and development of myopia are closely related to close work. The eyeballs of teenagers, in particular, are in the stage of growth and development, with strong adjustment ability and large extension of the ball wall. The adjustment and collection function of reading and other close work makes the internal rectus muscle exert certain pressure on the eyeballs, and the intraocular pressure increases accordingly. With the continuous increase of work, the frequency and time of adjustment and collection also gradually increase, Ciliary muscle and extraocular muscle are often in a high tension state. Excessive regulation can cause ciliary muscle spasm, resulting in temporary vision loss.
so how to protect eyes and prevent myopia?
1. Keep good working posture.
maintain the most appropriate posture to make both eyes look flat or slightly look down at the fluorescent screen, which can relax the neck muscles and minimize the area of eyeballs exposed to the air.
2. Never turn your eyes.
pay attention to frequent and complete blinking. Frequent blinking can reduce the time of eye exposure to the air and avoid the evaporation of tears.
3. Do not blow the air conditioner for too long.
avoid airflow on the seat, and place tea near the seat to increase the surrounding humidity.
4. Avoid operating the computer continuously for a long time.
pay attention to the intermediate rest, usually operate continuously for 1 hour and rest for 5-10 minutes. At rest, you can look far away or do eye exercises.
5. Adjust the distance from the fluorescent screen. The recommended distance of
is 50-70cm, and the fluorescent screen should be 10-20cm lower than the horizontal position of the eye, with a downward viewing angle of 15-20 degrees. Because the angle and distance can reduce the demand for refraction and reduce the probability of eye fatigue.
6. Eat more fruits.
, especially citrus fruits, should also eat more green vegetables, grain, fish and eggs. Drinking plenty of water can also help reduce dry eyes.
7. Keep good living habits.
ensure adequate sleep and do not stay up late.