According to the public health network, the dangers of lying down and watching mobile phones are as follows:

1, when holding the mobile phone, it is very close to the eyes, which is easy to cause eye fatigue;

2, the posture is not correct, lying down to see, it is easy to cause the neck, waist position and eyes to look at the east-west direction of extrusion, which may cause blood vessel compression and affect blood supply. Therefore, from the position, eye distance, posture, continuous eye use time and other aspects will cause fatigue to the eyes;

3. Cell phone light is also a light source that hurts the eyes at close range. Long-term light fatigue of blood supply to eyes will cause dry eye and increase the risk of dry eye;

4, the light intensity has a certain stimulus response, which may also lead to the damage of the light source to the retina of the eye.