Pain in the eyes is a symptom that almost everyone has encountered more or less often. The common causes are foreign bodies mixed in, conjunctivitis, keratitis, etc. Most of them can get better on their own, and when small foreign bodies such as dust are mixed in, they may be relieved by washing with water.
Sometimes the pain may be caused by more serious diseases, such as glaucoma, which need to be diagnosed by a doctor after examination.