What causes sudden loss of vision in the eyes?

Sudden vision loss may be caused by various factors, mainly including: 1. Glaucoma: increased intraocular pressure can lead to visual disturbances, resulting in blurred or even complete loss of vision. 2. Cataracts: clouding of the lens causes abnormal vision. 3. Retinal problems: such as acute central retinal artery occlusion, which leads to retinal ischemia due to impaired blood flow. 4. Optic nerve damage: injury or compression of the optic nerve may cause visual abnormalities. 5. Transient insufficient blood supply: for example, suddenly standing up after prolonged sitting or lying down may reduce cerebral blood flow, affecting vision. 6. Eye trauma: structural damage to the eye caused by severe impact or injury. Patients are advised to promptly seek medical evaluation at a hospital to determine the underlying cause and receive appropriate treatment.