Glaucoma is an eye disease that causes optic nerve papillary depression, optic nerve atrophy and visual field defects when the intraocular pressure exceeds what the tissues in the eye can tolerate. The main symptoms and manifestations are as follows: 1. Nausea and vomiting: Most patients with glaucoma will experience nausea and vomiting. The increased intraocular pressure causes the optic nerve to be compressed, thus causing excitation of the vagus and vomiting nerve centers. In addition, the increase of intraocular pressure will have a direct impact on intracranial pressure, which is also one of the important causes of nausea and vomiting. 2, vision loss: vision is gradually decreasing trend, optometry vision correction is less than 1.0, especially for highly myopic people, still often feel pain and eye soreness after wearing moderate glasses. As the sclera of highly myopic patients becomes longer, the elasticity decreases significantly. Once high eye pressure occurs, patients often feel no symptoms, so it is easy to ignore, but the vision gradually decreases without the patient noticing. Primary open-angle glaucoma patients will have mild blurred vision in the early stage, and in the late stage, there will be a narrowing of the visual field. In acute attacks of primary closed-angle glaucoma, vision can be highly impaired, and sometimes there is only light perception; 3. iris phenomenon: because of the presence of atrial fluid dynamic circulation disorder in the eye of glaucoma patients, which can easily cause corneal edema, the visual field will appear abnormal refractive response. When glaucoma patients look at daylight or lights at night, they can see colorful circles of light in the visual field, and there is a certain regularity, usually the middle is green, the outer circle is blue-purple, and the outermost circle is red-orange, and this abnormal refraction is called iridescence. The swelling of the eye will appear, along with head pain. In addition, because of the relatively large fluctuations in intraocular pressure in glaucoma patients, glaucoma patients are more likely to have eye fatigue when looking at things in the morning, and in some cases, they may also experience soreness at the root of the bridge of the nose, as well as swelling and pain in the eyebrows, orbits and forehead; 5.