There are still many friends who like to wear contact lenses. If you want to be beautiful and comfortable, then you should make comparisons in many aspects when choosing contact lenses. There are also many different types of contact lenses. Each brand of glasses seems to have a different price, style and quality, so you should be cautious when buying. Today, I will briefly introduce the precautions related to contact lenses. Note 1: You must choose regular brand products. No matter what type of contact lens you need, you should buy regular brand products. For example, you can purchase them directly, so that you can ensure that they are regular contact lenses that have been tested by various institutions. You must know that if you can choose high-quality contact lenses, the quality is guaranteed. Note 2: Considering the base curve problem, everyone's eyeball curvature is different. If we want to ensure the comfort of wearing contact lenses, then we should definitely determine the specific base curve. You can make sure when you go to the hospital for optometry. When buying contact lenses, you must pay attention to the base curve, otherwise you may have problems with sliding lenses. All the contact lenses in will have a very clear introduction, and we cannot ignore the base curve data. Note three, pay attention to the water content. Because the water content is different, the moisture content of wearing will have a certain difference, so we should definitely determine the water content of the contact lens, so as to ensure the comfort of wearing. Of course, everyone's wearing requirements are different, so choose contact lenses with moderate water content as much as possible. Note 4: Confirmation of the daily wearing time. If it is the first time to wear contact lenses, it is recommended that you wear them for two hours first, and then wear them for a long time after adapting to a period of time. You can wear it for 4 hours the next day, and so on, but try not to exceed 8 hours a day. And if you want to wear it for a long time, you can also choose some daily disposable lenses, so that it is safe and hygienic, and comfort is guaranteed.