Contact lenses should be chosen only if they are suitable for you. First of all, you should go to the hospital for eye examination, like optometry, slit lamp, etc., to check whether you are suitable for wearing contact lenses, like patients with cone cornea can not wear contact lenses, and patients with severe dry eye disease can not wear contact lenses. The choice of contact lenses mainly consider the following three aspects, as follows: 1, water content: high and low depending on their own tears, because the water content in the glasses will evaporate with the air, and take away their own tears in the eye. So when your own tears are better, you can choose contact lenses with higher water content, if not, you can choose contact lenses with lower water content.2. Oxygen permeability: Currently, contact lenses are mainly made of silicone hydrogel to increase the oxygen permeability of the material, so it is recommended that you choose the contact lenses made of silicone hydrogel.3. Material: The choice of the cycle of the contact lenses depends on the habit of wearing them. If it is a long-term wear, you can choose monthly disposable type, if it is short-term or occasional wear, you can choose daily disposable type. Usually contact lens wearing process, must pay attention to the hand, eye cleaning, to avoid infection, and contact lenses can not be worn overnight.