Do you have all three kinds of eye diseases, dry eye myopia and macula?

Abstract: in order to reduce the evaporation of tears, it is suggested that when you look at the mobile phone screen and computer screen, you can turn the screen lower, so that the upper eyelid can cover part of the eyeball and make the tears evaporate as little as possible. To put it simply, be sure to stare at the screen. It’s better to look down than up.

“the furthest distance in the world is that I sit opposite you while you are playing with your mobile phone.” I don’t know when, the mobile phone screen has firmly attracted people’s eyes: when eating, look at the mobile phone; When queuing, look at your mobile phone; When waiting for the car, look at the mobile phone; Before going to bed, look at your cell phone; When you wake up, look at your cell phone… Is it OK for your eyes to look at your cell phone so often?

“dry eye” disease

stare at the screen for a long time. One of the eye diseases easily caused is dry eye. When people look at the screen, especially when they see the content they are interested in, they concentrate and their eyes will not blink. There is a layer of tear film on the surface of human eyeball, which is equivalent to the lubricant of eyeball. If you keep your eyes open for a long time, the tear evaporates too strong, and your eyes will become “dry” if you can’t get lubrication. The bigger your eyes open and stare longer, the more tears evaporate.

and

reminder: in order to reduce the evaporation of tears, it is suggested that when you look at the mobile phone screen and computer screen, you can turn the screen lower, so that the upper eyelid can cover part of the eyeballs and make the tears evaporate as little as possible. To put it simply, be sure to stare at the screen. It’s better to look down than up.

myopia

staring at the screen for a long time will also make the ciliary muscles of the eyes unable to rest and adjust, resulting in myopia or aggravating the degree of myopia. Under normal circumstances, most infants are in hyperopia. With the development of eyeballs, the vision of children around the age of 10 becomes “face up”, that is, they are neither hyperopia nor myopia. After the age of 10, some people will develop myopia due to genetic factors or excessive eye use. Most people after the age of 20, even if they are short-sighted, the increase of glasses degree is generally not obvious. However, if you use your eyes too much at close range, you will not only have visual fatigue, but also increase the degree of myopia in adults, or sudden myopia without myopia. If the degree of myopia continues to grow in adulthood, and the degree of myopia is particularly high, such as thousands of degrees of myopia, we should be vigilant against pathological myopia.

now ophthalmologists often see smaller and smaller patients with myopia. Children in this age group should be hyperopia, but some parents use mobile phones and other “electronic nannies” to coax their children, which creates “favorable conditions” for the development of children’s myopia.

reminder: let your eyes rest after 45 minutes of eye use. You can close your eyes, do eye exercises, and look into the distance, which can alleviate visual fatigue.

macular disease

the blue light emitted by mobile phones and other screens is short wave light. Short wave light is characterized by strong penetration and is not easy to be absorbed. Therefore, blue light is more likely to penetrate the refractive system of the eye and reach the fundus, causing certain damage to the macula of the fundus.

if a person’s eye is a camera, the retina is a negative film. The macula is located in the posterior pole of the retina. Although it is called the macula, it is not a “spot” of the fundus, but a part that concentrates a large number of visual function cells. It can help people identify optical signals such as shape, size, color, depth and distance. It is an important part that determines visual function. Once the macula is damaged, it will cause serious visual loss and even blindness. At present, there is no large-scale and multi center scientific research data or survey data to prove how much intensity of blue light will cause damage to the macula, but in theory, it is based on the fact that blue light will cause certain damage to the fundus. Therefore, from the perspective of prevention, people should also try to reduce the time of playing mobile phones.

reminder: some people don’t forget to play mobile phones before going to bed. Don’t play with your cell phone or watch your computer in the dark. In the dark, the pupil of the eye will enlarge, and more blue light will pass through the refractive system to the fundus. Therefore, before going to bed, you must have a background light to enhance the brightness of the surrounding environment and make the pupils “smaller”.

and

bow their heads to be careful of “Apple disease”,

and

bow their heads 45 degrees to play with their mobile phones, which is equivalent to hanging two big watermelons around their neck. This kind of cervical spondylosis caused by long-time head down playing with mobile phone and iPad is sometimes called “Apple disease” by doctors. The head of an adult male weighs about 8 kilograms and the neck is equivalent to a lever. Under normal circumstances, people will feel more relaxed when they are in the “upright position” with their neck against their head. When you lower your head, especially when you lower your head more than 45 degrees, the weight of your head will be amplified by a lever, and the pressure applied to your neck will reach the size of 30kg. The cervical spine is most afraid of “keeping a posture motionless”. “Apple disease” patients, especially young patients, can alleviate cervical spondylosis through exercise and changing bad habits; For patients who have begun to have neck and shoulder pain, if they change their living habits for more than a week and their symptoms have not been alleviated, it is best to go to the hospital.