Do optical shops need three types of medical certificates to sell contact lenses and care products?

First, before buying contact lenses, professional optometry is essential. Different people's eyes have different characteristics. Before buying contact lenses, you must have a professional optometry to get a preliminary understanding of your eye vision. Generally speaking, contact lens optometry mainly includes myopia, astigmatism, pupillary distance, axial position, retinoscopy optometry, corneal curvature, intraocular pressure, tear secretion detection and so on. Other indicators include diopter, diameter, base arc, water content, oxygen permeability coefficient, etc. Only by knowing your own eye condition can you match the most suitable contact lenses. If the fitting is not correct, it will seriously affect the vision problems of the eyes. Wearing inappropriate contact lenses for a long time is not only uncomfortable to wear, but also easy to cause eye diseases. Second, when buying contact lenses, look for a business license for medical devices. In June 2003, contact lenses were classified as the third kind of medical devices. Since then, selling contact lenses and their care solutions has become a medical behavior. Whether it is an optical shop or a contact lens e-commerce website, you need a medical device business license to sell it. At present, the trend of buying contact lenses online is obvious, but there are many contact lens websites without business licenses. Therefore, friends who buy contact lenses online must look for the license of the medical device business enterprise, and beware of being deceived. Third, buy contact lenses, choose a formal way to buy contact lenses should be carefully selected. Many friends who buy contact lenses choose private informal channels in pursuit of affordable prices, so there is no guarantee. Especially color contact lenses, because there is a layer of pigment inside, poor quality color contact lens pigment is dyed on the lens surface, which is easy to fade and does great harm to the eye membrane. Therefore, you must choose a formal way to buy contact lenses, especially friends who like to buy contact lenses online must choose a professional and formal website.