Do sodium hyaluronate eye drops have preservatives?

Sodium hyaluronate eye drops are artificial tears and have no anti-inflammatory or other active ingredients. Its ingredients are mainly like our tears, mainly aimed at people who often have dry eyes, feel uncomfortable when using computers, and people who are accompanied by dryness. I suggest you use them for a long time. Sodium hyaluronate eye drops contain preservatives, and some do not. At present, most eye drops without preservatives, such as sea or other kinds of eye drops, are also artificial tears without preservatives. It is also suggested that you can use them. At present, sodium hyaluronate is widely used in the world, and no toxic or side effects have been found. You can use some if your eyes are uncomfortable. Even in the case of conjunctivitis or some allergic eye diseases, it is recommended to use some sodium hyaluronate to relieve eye discomfort.