Eye pain and a foreign body sensation indicate that the eye: i. There may actually be a foreign body; the foreign body may be something like sand or scum that got in accidentally. It can be dealt with by flushing with salt water or turning the eyelids to observe and clean up. Second, there can be inflammation in the eye, such as conjunctivitis, trachoma or stones, which can also cause eye pain and a foreign body sensation. May be accompanied by increased secretions or blurred vision and other related symptoms, you can choose the appropriate anti-inflammatory eye drops to deal with. Third, it may be overuse of the eyes or visual fatigue, there will also be eye pain or a foreign body sensation. Pay attention to rest and use appropriate eye drops.