Blurred eyes and numbness of limbs may be related to excessive fatigue, or may be caused by complications of diabetes and brain lesions. 1. Excessive fatigue: If you have been engaged in heavy physical labor for a long time in the near future, or frequent mental labor, coupled with frequent late nights, resulting in poor sleep quality and insufficient sleep time, in the long run, resulting in the brain and body in a long time in a state of excessive fatigue, and may cause visual fatigue, it may cause blurred eyes and numbness of the limbs. 2. Complications of diabetes mellitus: some diabetic patients due to poor blood sugar control, it is likely to induce complications, causing damage to the optic nerve, thus causing blurred eyes. Diabetes may also induce peripheral neuropathy, resulting in damage to the peripheral nerves, resulting in poor blood flow to the nerve endings, which may cause numbness of the limbs. 3. Brain lesions: commonly found in brain tumor, cerebral infarction, cerebral hemorrhage and other diseases, such as brain tumor, due to the tumor occupies the position, the local brain tissue caused by compression, resulting in damage to the brain nerves, inducing brain dysfunction, which may cause numbness of the limbs. Brain tumors are prone to cause increased intracranial pressure, resulting in optic papillary edema, which may cause blurred eyes. Blurred eyes and numbness of the limbs may also be caused by other reasons, if the symptoms continue to be unable to relieve, it is recommended to consult a doctor as soon as possible to diagnose the cause of the disease, and then carry out targeted treatment.