Second cranial nerve atrophy
Many causes of optic nerve atrophy cannot be prevented. Facial injuries can be prevented by standard safety precautions. Most such injuries are related to motor vehicle accidents and can be prevented by seat belt use.
Methanol is the most common toxin causing optic nerve atrophy. It can be found in home-brewed alcohol. Home-brewed alcohol and forms of alcohol not intended for drinking should never be consumed.