The correct way to use Polyvinyl Alcohol Eye Drops is to strictly follow the instructions for use of the medicine under the guidance of a professional doctor. Polyvinyl Alcohol Eye Drops is a type of artificial tears, which is used as a lubricant, mainly for the treatment of dry eyes, which can be applied when there are symptoms such as dryness and foreign body sensation in the eyes. Because it has no preservatives added, it is usually packaged in single sticks. The newly prescribed one eye drop is not used up within a day, and needs to be discarded promptly on the 2nd day so that the drug does not deteriorate and bring side effects to the eyes. When using eye drops, you should stop using them immediately if symptoms of blurred vision and stinging in the eyes occur and last for more than 72 hours. Eye drops should be used under the guidance of a professional doctor and in accordance with the instructions of the drug, and if there are any symptoms of discomfort during use, the drug should be stopped immediately, and if necessary, consult a doctor for examination.