There are more types of artificial tears, which are roughly divided into three categories: supplemental aqueous, supplemental lipid, and supplemental mucin, of which the aqueous type is the most common and most widely used. 1. Aqueous artificial tears: the more common are sodium vitrate eye drops, sodium hydroxymethylcellulose eye drops, etc., suitable for mild to moderate dry eyes with insufficient tear secretion, which can relieve the symptoms of dry eyes. 2. Lipid-based artificial tears: for example, Carbomer eye drops, containing lipid components, have a certain effect on the lack of lipid, evaporation of the strong type of dry eyes. However, it should be noted that for dry eyes with abnormal lipids, the focus is generally on improving the function of the glands. 3. Mucin-type artificial tears: the more representative is Diquafosol sodium eye drops, this kind of artificial tears can promote the secretion of mucin on the ocular surface, and is suitable for dry eyes with mucin deficiency. Dry eye patients should seek medical examination to clarify the condition, and then use the relevant drugs under the guidance of the doctor. Artificial tears eye drops should be used to avoid contact with the bottle to avoid contamination, and should be sealed and stored immediately after use.