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It is reasonable for people to wear contact lens less than 8 hours. However, forgetting the time limit is often a matter for contact lens users, thus eyes irritation followed and affects health. Our product is a box that has capacity to warn the users of the wearing time.
We use environmentally sensitive materials, the box will turn into red after 8 hours since the contact lens is been taken out from the glasses box, it reminds the users of removing the contact lens immediately..
Xin Liu Wenmei Zhang Suhao Di Simin Gan