The first thing to clarify is the nature of the pain, whether it is a pins-and-needles pain or a dull swelling pain, whether it is transient or persistent, and the intensity of the pain. If it is a transient pins-and-needles pain and can be relieved after rest, it may be caused by eye fatigue and eye dryness due to excessive eye use. If it is a persistent pinprick-like pain, it may be due to corneal epithelial abrasion, electrophthalmia, which is often severe but can be identified by the pain disappearing immediately after dropping surface anesthetics. Such pain can also occur with keratitis and severe conjunctivitis, often accompanied by increased ocular discharge. If the pain is dull and distended, it may be glaucoma, acute iridocyclitis, endophthalmitis, etc. Among them, glaucoma pain varies in severity from vague to bursting pain (mostly seen in acute attacks of glaucoma); acute iridocyclitis, endophthalmitis, and allodynia are severe pain. And it is accompanied by severe vision loss. If there is rotational pain in the eye, i.e. pain that is noticeable when turning, it may be due to severe visual fatigue or retrobulbar optic neuritis. Therefore, eye pain can occur in a variety of eye diseases, so if it occurs, please seek prompt medical attention to clarify the cause.