What are the eye hazards of playing cell phones with the lights out?

Playing cell phones with the lights out may cause visual fatigue, vision loss, dry eye and other hazards to the eyes.
1. Visual fatigue: because after the lights are out, the light will be darker, which will lead to eye pupil dilation, thus causing sensitivity reduction, and at this time the ciliary body is usually in a spasm, causing visual fatigue phenomenon.
2. Vision loss: after the lights out, the indoor light will be darker, and the cell phone screen glare stimulation of the eyes may affect the normal eye adjustment, spasm, may lead to vision loss, such as failure to improve the formation of myopia may also be myopia.
3. Dry eye: after lights out, this time to play the phone may make the eyes in the near to see a performance, at the same time will lead to the eyes of the tear secretion will be reduced, the eyes will appear dry symptoms, over time may induce dry eye.
If you play the cell phone after lights out, causing discomfort symptoms, it is recommended to go to the hospital in time to check the cause, targeted treatment.