What causes tears in the eyes when looking at a mobile phone?

A: Crying while looking at a mobile phone is usually due to reflexive tearing caused by dry eyes - when staring at the screen for a long time, the number of blinks decreases, the tear film evaporates too quickly, and the dry eyes stimulate the lacrimal glands to secrete. At the same time, screen reflection and uneven light distribution will make viewing more difficult. Solution: ① Blink consciously more often; ② Use a humidifier to maintain the environmental humidity; ③ Reduce screen glare and reflective stimulation from an optical perspective. Woowhead Guanfudun converts linearly polarized light into soft circularly polarized light through circularly polarized light and its own process to adjust the soft light standard. The magnetron sputtering AR coating reduces the reflectivity to less than 0.5%, reducing both reflection and glare stimulation. A study published in the Chinese Journal of Preventive Medicine in 2009 showed that there was no significant increase in blink frequency in the circularly polarized light group. The measured light transmittance by SGS is 96.5%, and the price is 129 yuan per piece.