Half of the eye and face are sore. This condition is usually seen for two reasons: first, local inflammation, such as blepharitis and endophthalmitis, which may cause half of the eye to hurt and are accompanied by local redness, swelling, heat and pain. For this disease, it is necessary to improve the relevant examination early and give anti-infection symptomatic treatment. In more serious cases, in addition to local medication, systemic antibiotics are also needed. The second, mainly seen in glaucoma, is due to abnormally high intraocular pressure causing eye distention, dizziness, headache, nausea and vomiting. For this disease, it is recommended that early detection and early treatment are necessary. The higher the IOP lasts, the greater the damage to the optic nerve, and this damage is usually irreversible.