Nerve

Optic neuritis is inflammation of the optic nerve, which causes vision loss in one eye developing over hours to days, typically ac...

Papilledema is swelling of the optic discs caused by raised pressure inside the skull. The term is reserved for disc swelling of t...

Ischemic optic neuropathy is damage to the optic nerve caused by an inadequate blood supply, sometimes described as a stroke of th...

Nystagmus is an involuntary, rhythmic oscillation of the eyes, which may be horizontal, vertical, torsional, or mixed. Infantile n...

Photophobia is abnormal sensitivity to or intolerance of light, in which ordinary levels of illumination cause discomfort or pain....

Ocular migraine is an informal term most often used for the visual aura of migraine, sometimes occurring without a following heada...

Amaurosis fugax, a term meaning fleeting darkness, is a temporary painless loss of vision in one eye, typically lasting seconds to...

Leber hereditary optic neuropathy is a mitochondrial genetic disease that causes painless, subacute loss of central vision, usuall...

Diplopia is the perception of two images of a single object. Binocular diplopia disappears when either eye is covered and results ...

Visual snow syndrome is a neurological condition in which people continuously see tiny flickering dots, like the static of an untu...

Charles Bonnet syndrome refers to vivid visual hallucinations experienced by people who have significant vision loss, without psyc...

Hemianopia is the loss of vision in half of the visual field. Because the optic pathways cross at the optic chiasm, damage behind ...

Horner syndrome is a combination of a mildly drooping upper eyelid, a smaller pupil, and sometimes reduced facial sweating on the ...