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Glasses / Household

Glasses

When reading or writing, the best distance between the human eyes and the books is 33 cm. Many people who refuses to sit properly are more likely to develop nearsightedness. Setting a small cavity in the centre of glasses, it can emit beams of infrared light and directly sense the distance between eyes and the books.When the eyes are away from the books in 25 cm or even close,meanwhie,the time of keeping this position for more than 10 seconds,glasses legs will vibrates to remind us to correct sitting posture.There is a shaking device used for feeling vibration easily in the inside position of glasses legs.Has it, away from the myopia.

University

Tianjin University of Technology

Tianjin University of Technology
Tianjin, China

Shuai Han,
Nanjing Normal University

Yingxia Tian,
Nanjing Normal University