Neuro-ophthalmology is the subspecialty of both neurology and ophthalmology concerning visual problems that are related to the nervous system. A neuro-ophthalmologist may see include optic neuritis, optic neuropathy, papilledema, ocular myasthenia gravis, brain tumors or stroke affecting vision, idiopathic intracranial hypertension, unexplained visual loss, headaches, diplopia, blepharospasm or hemifacial spasm. Neuro-ophthalmologists evaluate and treat patients who have reduced vision, blind spots owing to disorders of the optic nerve and its connections to the brain, subnormal vision that is not explained by abnormalities of the eyes, double vision, abnormalities of the pupils, and droopy eyelids. They also evaluate and treat any condition in which there may be a brain abnormality causing a disturbance of vision, misalignment of the eyes, or abnormal eye movements. The Neuro-Ophthalmology Service treats disorders such as optic neuritis, ischemic optic neuropathy, brain tumors involving the optic nerves or chiasm, strokes that cause visual loss or double vision, transient monocular blindness, migraine with visual symptoms, myasthenia gravis, multiple sclerosis, mitochondrial disease, muscular disease that affects the eye and unexplained vision loss. Neuro-ophthalmology is a sub specialty of neurology and ophthalmology, requiring expertise in the functioning of the eye and the muscles and nerves that control the eye. Neuro-Ophthalmology Service evaluates patients with neurologic disease resulting in vision loss. They provide care for patients with neurologic visual loss, and works closely with other subspecialty neurologists and ophthalmologists, neurosurgeons, and neuroradiologists to provide comprehensive medical and surgical treatment. The Neuro-Ophthalmology Service also offers Visual Rehabilitation for patients with peripheral vision loss after stroke or head injury.