First, eye muscle pain caused by visual fatigue, which often has no change in vision, is related to long-term use of eyes and continuous close-up viewing of electronic products, such as computers, mobile phones, fatigue, mental tension and lack of rest;

The second is glaucoma, which is a severe swelling pain, often accompanied by a sharp drop in vision, inability to see things clearly, and then a headache, severe nausea, vomiting, etc.

Third, acute iridocyclitis often causes tingling discomfort in the eyes, with little change in vision in the early stage and obvious decline in vision in the later stage of iris adhesion. Often accompanied by low immune function, easy to catch a cold, rheumatic joint diseases and so on. More common;

Fourth, keratitis, which often causes stinging eyes. Seriously, I am afraid of tears and my vision is declining. Some patients often sleep well the night before, and when they wake up the next morning, they feel foreign body in their eyes, which makes them hard to open. This is the case.