1. Acute angle-closure glaucoma: more common in the elderly over 50 years old, more common in women, and severe cases can lead to blindness in a short time. There is a tendency of family inheritance, and anger, excessive fatigue and sudden climate change are all common inducing factors. In addition to sudden loss of vision, the disease is accompanied by eye pain, headache, nausea and vomiting. When you look at incandescent bulbs, you will feel colored rings around them.
2. Central retinal artery embolism: Many elderly people have atherosclerosis problems. For example, the atherosclerotic plaque on the inner wall of the artery falls off, which will lead to central retinal artery embolism and retinal ischemia and necrosis, thus losing visual function. The typical feature of this disease is that one eye is suddenly painless and completely blind, and some patients will have paroxysmal and transient blackness before the attack. It is more common in the elderly with hypertension, arteriosclerosis and cardiac insufficiency. If not treated in time, they may be completely blind due to retinal tissue necrosis.
3. Vitreous hemorrhage: it often occurs in the elderly with hypertension and diabetes, and some patients with fundus vascular diseases can also occur. Bleeding usually comes from new blood vessels or damaged blood vessels in the fundus. When blood enters the vitreous cavity and blocks light from entering the eyes, it will lead to decreased vision. When there is little hematocele, in addition to blurred vision, there is a fluttering shadow in front of us; Blood accumulates for a long time, and vision drops sharply, leaving only light perception.
4. Optic papilla ischemia: With the hardening of blood vessels supplying nutrients to the optic papilla, the optic nerve in the corresponding blood supply area is ischemic and the optic papilla is degenerated, so the vision is suddenly blurred, accompanied by a fixed blind spot in front of the eyes, that is, visual field loss.
5. Retinal detachment: more common in middle-aged and elderly people, mostly nearsighted, and some people have eyes. Age, heredity and trauma are all inducing factors. When the retina is completely detached, it will show a sudden drop in vision.
6. Diabetic retinopathy: This is a common eye complication of diabetic patients and one of the main causes of blindness in ophthalmology. The longer the course of diabetes, the more serious retinopathy.
7. Stroke: Most stroke patients have no warning in advance, and only a few stroke patients may have signs such as hemiplegia, facial numbness, hemiplegia and sudden diplopia within one hour or a few months before onset.
It is recommended to go to the hospital for ophthalmological examination and diagnosis and symptomatic treatment.