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With the popularity of contact lenses, more and more people will use the contact lens, but the contact lens has its use period, and busy life and work will make us forget the expiration time of the contact lens, this observation "eye" The color eye contact reminder box solves this problem. When the box is opened, the color ring on the box will fade over time, so as to remind you to replace the contact lens and protect the health of your eyes.
Anhui Polytechnic University