Blindness after cataract surgery may be caused by suprachoroidal hemorrhage, secondary glaucoma, etc. It can be treated by medication and laser surgery. 1. Medication: Intraocular hemorrhage may be caused by the damage of choroidal vessels and capillaries at different levels after cataract surgery, which will result in symptoms such as vision loss, dark shadows in front of the eyes, and vitreous hemorrhage, which may lead to blindness in severe cases, and can be treated with medicines such as carisoprodol sodium and diazepam under the guidance of the doctor. 2. Surgery: secondary glaucoma after cataract surgery will cause eye pain, headache, visual field defect, discoloration of the eyeballs and other symptoms, which will lead to blindness in serious cases, and can be relieved by laser surgery. Therefore, if you are blind after cataract surgery, you should go to the hospital as soon as possible and follow the doctor’s instructions for standardized treatment.