In both open-angle and closed-angle glaucoma, the damage to the visual field and optic nerve is irreversible and cannot be restored even after treatment. The persistent high intraocular pressure in open-angle glaucoma causes compression or neurotrophic damage to the optic papilla, optic nerve, and other structures, resulting in the characteristic visual field defects. The optic nerve is irreparably regenerative, and once damage occurs, even treatment cannot reverse the visual field damage that has occurred. Pathological increase in intraocular pressure can be characterized by ocular distension and pain, headache and dizziness, etc. If you have relevant symptoms, you should go to the ophthalmology department in time for examination, and early intervention after clarification of the cause of the disease can slow down or stop the visual field damage and other adverse consequences.