There are many reasons associated with double vision in the eyes, such as refractive error, trauma, cataract, paralysis of extraocular muscles, etc. 1. Refractive error: Refractive error will appear myopia, hyperopia, astigmatism, and sometimes double vision. It is necessary to go to the hospital for vision examination and wear glasses if necessary. 2. Trauma: patients with traumatic brain injury or bone fracture caused by nerve damage to the muscle innervating the extraocular muscles, appearing to see things with double vision. You need to treat the wound in time and go to the hospital for diagnosis. 3. Cataracts: Cataracts mostly occur in the elderly. Due to aging, a white fog appears when seeing things, which is diagnosed as cataract, and there will be double shadows when seeing things. It is recommended to choose surgical treatment according to the patient’s own situation. 4. Extraocular muscle paralysis: caused by damage to the cranial nerve innervating the extraocular muscle, after the extraocular muscle paralysis, the movement of both eyes is uncoordinated, resulting in double vision. Patients with double vision need to pay attention to daily walking to avoid falling due to poor vision. Diet rich in vitamin B foods, eat more vegetables, fruits, shrimp, fish, chicken and so on. If you have double vision, you need to go to the hospital in time to find out the cause of the problem and make the best treatment plan.