Intraocular pressure is the pressure of the contents of the eye acting on the wall of the eye and the interaction between the contents. For normal people, IOP will generally have a relatively stable range. For patients who want to determine whether their IOP is high or not, they can make a general judgment of IOP by finger-measuring IOP or clinical symptoms, but there may be some errors. 1. finger-measuring IOP: the hardness of the hand is similar to the lips when normal IOP is finger-measured, and similar to the forehead when IOP is high. But non-professional self-measurement deviation is larger; 2, clinical manifestations: IOP elevation varies depending on the disease, individual physique. However, it is common to have eye distension accompanied by blurred vision or vision loss, visual field defects and other manifestations; there are also patients who may experience easy fatigue, headache, nausea, vomiting and other symptoms. Therefore, it is recommended that patients who suspect an increase in intraocular pressure or other eye discomfort symptoms should visit a hospital and have their eyes measured by a professional doctor using the finger-test method or by using an intraocular pressure meter. If the IOP is clearly high, it is important to identify the cause and treat it to avoid delaying the condition and causing permanent damage to the eye. It is also important to avoid the triggering factors that cause elevated IOP in daily life, such as reading in the dark for a long time, looking down at books, and playing with electronic devices.