Invisibility is related to the health of eyes. It is not recommended to buy on Pinduoduo. Pinduoduo's products are mostly inferior products, or there are few high-quality products, mainly because of price wars, and the prices are relatively low. If you can buy some daily necessities at the store, it will not affect your health, but contact lenses are different. If the contact lens is not made properly, it will lead to eye inflammation such as keratitis and conjunctivitis, which will lead to decreased vision. So if you buy contact lenses, you should go to a regular optical shop to buy contact lenses.
Contact lenses can be purchased in physical stores. One is the quality problem, the other is the degree problem, and the bottom arc of the lens is comfortable to wear. Otherwise, it is either loose or tight, and the eyes are sour and uncomfortable when the slider is loose and tight.