Turn on the flash when you are lying in bed watching your mobile phone.

It is not good to turn on the flash when you are lying in bed watching your mobile phone, which may cause harm to your eyes.

Flash is a kind of high brightness light source, which can emit strong light. In the dark, this kind of light will cause irritation to the eyes, which may lead to discomfort, eye fatigue and other problems, and may also cause permanent damage to vision for a long time. In addition, lying in bed watching the mobile phone itself is not good for your eyes. This posture will make the distance between the eyes and the screen of the mobile phone too close, make it more difficult for the eyes to adjust the focal length, and easily lead to problems such as eye fatigue and myopia.

Therefore, in order to protect the health of eyes, it is recommended to avoid using the mobile phone for a long time in the dark, and don't turn on the flash when watching the mobile phone in bed. If you need to use a mobile phone, you'd better keep a proper distance and angle, control the use time and avoid excessive use. If you feel unwell, you should seek medical advice promptly.

Precautions for watching mobile phones

1. Keep a proper distance: the distance between the eyes and the screen of the mobile phone should be about 30cm, and at the same time, adjust the brightness of the screen to avoid eye irritation caused by too bright or too dark.

2, control the use time: watching the phone for a long time can easily lead to eye fatigue and dryness. It is recommended to take a break every once in a while to fully relax your eyes.

3, adjust the screen angle: try to avoid the phone screen parallel to the eyes, you can tilt the phone slightly to reduce the burden of eye focus adjustment.

4. Avoid watching mobile phones in the dark: Watching mobile phones in the dark will make your eyes more tired and may also damage your eyesight. If you must watch your phone in the dark, it is recommended to turn on the night mode or reduce the screen brightness.