Neuro Ophthalmology Glossary
100 terms total — 24 showing — Last updated 15 Sep 2026
hemianopsia
Loss of vision in half of the visual field of one or both eyes.
dorsal midbrain syndrome
Neurological syndrome affecting vertical gaze and pupillary function due to lesions in the dorsal midbrain region.
electrooculography
A technique measuring the standing potential between cornea and retina to assess retinal pigment epithelium function.
electroretinogram
A diagnostic test measuring the electrical response of retinal cells to light stimulation.
fixation
The ability to direct and maintain the visual axis on a target of interest, involving complex neural mechanisms for gaze...
fixational eye movements
Miniature eye movements that occur during attempted fixation, including microsaccades, drift, and tremor.
Foster Kennedy syndrome
Clinical syndrome of unilateral optic atrophy with contralateral papilledema, typically caused by frontal lobe mass lesi...
fourth nerve palsy
Trochlear nerve paralysis causing superior oblique muscle weakness and vertical diplopia.
fundus photography
Specialized retinal imaging technique used to document optic disc and retinal pathology in neuro-ophthalmic conditions.
ganglion cell layer
The innermost nuclear layer of the retina containing retinal ganglion cell bodies whose axons form the optic nerve.
gaze palsy
Inability to move both eyes conjugately in a specific direction due to dysfunction of supranuclear gaze control mechanis...
glioma
A primary brain tumor arising from glial cells that can compress the visual pathways and cause neuro-ophthalmological sy...
Goldmann perimetry
Manual visual field testing technique using kinetic stimuli to map the boundaries of visual perception.
hemianopia
Loss of vision in half of the visual field, typically indicating a lesion in the visual pathway posterior to the optic c...
hemianopsia
Loss of vision in half of the visual field of one or both eyes.
hemifacial spasm
Involuntary unilateral facial muscle contractions often caused by vascular compression of the facial nerve.
hollenhorst plaque
Bright, refractile embolic deposits visible on fundoscopic examination, typically composed of cholesterol crystals lodge...
Horner syndrome
A neurological condition characterized by ptosis, miosis, and anhidrosis due to sympathetic nerve pathway disruption.
internuclear ophthalmoplegia
Eye movement disorder caused by lesion in the medial longitudinal fasciculus, resulting in impaired adduction and horizo...
Ishihara color plates
Standardized color vision test using numbered plates with colored dots to detect red-green color deficiencies.
Leber hereditary optic neuropathy
Maternally inherited mitochondrial disorder causing acute or subacute bilateral vision loss, primarily affecting young m...
light-near dissociation
Pupillary response pattern with absent light reflex but preserved near response.
Marcus Gunn jaw winking
Congenital synkinesis causing eyelid elevation with jaw movement.
metamorphopsia
Visual distortion where straight lines appear wavy, bent, or irregular.
miosis
Constriction of the pupil to smaller than normal size.