Intraocular pressure is the pressure of the eye contents against the wall of the eye, and the normal physiological state is 10 to 21 mm Hg. However, this number is not an absolute value, but only a statistical figure for a large sample, and exceeding the upper limit of this number, or falling below the lower limit of this value, is not necessarily all abnormal pathological conditions. And there are pathologies that fall within this range. Of course, if the IOP is greater than 25 mm Hg, it needs to be taken very seriously. Because if the IOP is too high, accompanied by eye pain, eye distention, headache, head swelling, nausea, vomiting and other uncomfortable symptoms, it is necessary to seek medical attention as soon as possible to confirm whether an acute glaucoma attack has occurred. If the above symptoms occur, patients should not treat themselves, but must be given appropriate treatment by an ophthalmologist. There are three main types of treatment: topical medications, systemic medications, and surgical treatment. The main topical medications to lower the IOP are, Saimurol eye drops, Brinzolamide eye drops, Maurobrine eye drops, Latanoprost eye drops, etc. The main medications for systemic IOP lowering are, mannitol drops, vinpocetine or acetazolamide orally. Surgery to lower IOP mainly includes trabeculectomy, drainage valve implantation, ciliary condensation, and laser photocoagulation of the ciliary body. If the IOP is too high, anterior puncture may also be an option in order to quickly lower the IOP to relieve symptoms. These treatments should be selected according to the specific situation of the patient. There are indications and risks associated with either medication or surgery.