Optic nerve disorders refer to conditions that affect the optic nerve, which transmits visual information from the retina to the brain. These disorders can lead to vision loss, blurriness, or other visual disturbances. Common causes include glaucoma, optic neuritis, and ischemic optic neuropathy. Symptoms of optic nerve disorders may include sudden vision changes, pain in the eye, or difficulty seeing colors. Diagnosis typically involves a comprehensive eye examination, including visual field tests and imaging studies. Treatment options vary depending on the underlying cause and may include medications, surgery, or vision rehabilitation.