To differentiate between open-angle glaucoma and closed-angle glaucoma, you can observe the morphology of the patient’s angle room, which is different, as well as the speed of onset of the two is not the same. 1. The morphology of the angle is different: in open-angle glaucoma, the angle of the patient’s room is open during the onset of the disease, because of the structural abnormality of the trabecular meshwork, which causes an increase in the resistance to aqueous drainage, and finally leads to an increase in intraocular pressure in the patient. In closed angle glaucoma, the angle is closed and the aqueous humor cannot enter the trabecular meshwork of the angle, which leads to an increase in intraocular pressure. 2. The speed of onset is different: closed-angle glaucoma may have acute onset, while open-angle glaucoma patients usually have chronic onset, so the speed of onset of the two is not the same. It is recommended that patients with glaucoma consult a doctor in a timely manner to assess their condition and follow the doctor’s instructions for treatment.