There are many different types of glaucoma, and the symptoms vary from one type to another. The main manifestation is a significant loss of visual acuity accompanied by visual field defects. In patients with acute closed-angle glaucoma, there is a significant short-term loss of vision, iris vision, hazy vision, etc. Subjective symptoms are significant eye pain, head pain, mainly distension, and some systemic symptoms such as nausea, vomiting, etc. Some patients with petit mal seizures may recover after rest, but patients with grand mal seizures often have intolerable symptoms. Most patients with glaucoma can have their intraocular pressure controlled to a relatively normal level with the use of anti-glaucoma medications. In chronic closed-angle glaucoma and open-angle glaucoma, most patients do not necessarily have significant symptoms, but vision loss continues and persistent visual field defects are evident on visual field examination. In advanced cases, this can lead to tubular vision or even complete blindness. Some of the secondary glaucoma manifestations are similar to those of open-angle glaucoma or acute closed-angle glaucoma. Different types of glaucoma are treated differently, and the appropriate treatment needs to be chosen according to the individual’s condition.