Sudden transient blindness in one eye may be caused by cerebrovascular diseases, retinal diseases, inflammatory diseases of the eye and so on. 1. Cerebrovascular diseases: cerebrovascular diseases such as aneurysm, hypertension, atherosclerosis, etc., can lead to sudden transient blindness in one eye. 2. Retinal diseases: retinal diseases such as retinal detachment and central retinal artery blockage can easily affect the blood supply to the eye, and when the blood supply to the eye is insufficient or suddenly interrupted, it may cause sudden transient blindness in one eye. 3. Inflammatory diseases of the eye: such as optic neuritis, retinitis pigmentosa and other diseases, can lead to vision loss and sudden transient blindness of one eye. It is recommended that the patient go to the hospital in time, complete the relevant examinations, clarify the cause of the disease and follow the doctor’s instructions for treatment.