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Neuro Ophthalmology Glossary

100 terms total — 24 showing — Last updated 15 Sep 2026

hemianopsia

Intermediate Technical IVT

Loss of vision in half of the visual field of one or both eyes.

Showing 25–48 of 100

dorsal midbrain syndrome

Advanced Technical IVT

Neurological syndrome affecting vertical gaze and pupillary function due to lesions in the dorsal midbrain region.

Technical Term Full entry →

electrooculography

Advanced Technical IVT

A technique measuring the standing potential between cornea and retina to assess retinal pigment epithelium function.

Technical Term Full entry →

electroretinogram

Intermediate Technical IVT

A diagnostic test measuring the electrical response of retinal cells to light stimulation.

Technical Term Full entry →

fixation

Intermediate Technical IVT

The ability to direct and maintain the visual axis on a target of interest, involving complex neural mechanisms for gaze...

Technical Term Full entry →

fixational eye movements

Advanced Technical IVT

Miniature eye movements that occur during attempted fixation, including microsaccades, drift, and tremor.

Technical Term Full entry →

Foster Kennedy syndrome

Advanced Technical IVT

Clinical syndrome of unilateral optic atrophy with contralateral papilledema, typically caused by frontal lobe mass lesi...

Technical Term Full entry →

fourth nerve palsy

Intermediate Technical IVT

Trochlear nerve paralysis causing superior oblique muscle weakness and vertical diplopia.

Technical Term Full entry →

fundus photography

Intermediate Technical IVT

Specialized retinal imaging technique used to document optic disc and retinal pathology in neuro-ophthalmic conditions.

Technical Term Full entry →

ganglion cell layer

Intermediate Technical IVT

The innermost nuclear layer of the retina containing retinal ganglion cell bodies whose axons form the optic nerve.

Technical Term Full entry →

gaze palsy

Advanced Technical IVT

Inability to move both eyes conjugately in a specific direction due to dysfunction of supranuclear gaze control mechanis...

Technical Term Full entry →

glioma

Professional Technical IVT

A primary brain tumor arising from glial cells that can compress the visual pathways and cause neuro-ophthalmological sy...

Technical Term Full entry →

Goldmann perimetry

Professional Technical IVT

Manual visual field testing technique using kinetic stimuli to map the boundaries of visual perception.

Technical Term Full entry →

hemianopia

Professional Technical IVT

Loss of vision in half of the visual field, typically indicating a lesion in the visual pathway posterior to the optic c...

Technical Term Full entry →

hemianopsia

Intermediate Technical IVT

Loss of vision in half of the visual field of one or both eyes.

Technical Term Full entry →

hemifacial spasm

Intermediate Technical IVT

Involuntary unilateral facial muscle contractions often caused by vascular compression of the facial nerve.

Technical Term Full entry →

hollenhorst plaque

Professional Technical IVT

Bright, refractile embolic deposits visible on fundoscopic examination, typically composed of cholesterol crystals lodge...

Clinical Sign Full entry →

Horner syndrome

Intermediate Technical IVT

A neurological condition characterized by ptosis, miosis, and anhidrosis due to sympathetic nerve pathway disruption.

Technical Term Full entry →

internuclear ophthalmoplegia

Advanced Technical IVT

Eye movement disorder caused by lesion in the medial longitudinal fasciculus, resulting in impaired adduction and horizo...

Technical Term Full entry →

Ishihara color plates

Intermediate Technical IVT

Standardized color vision test using numbered plates with colored dots to detect red-green color deficiencies.

Diagnostic Test Full entry →

Leber hereditary optic neuropathy

Professional Technical IVT

Maternally inherited mitochondrial disorder causing acute or subacute bilateral vision loss, primarily affecting young m...

Technical Term Full entry →

light-near dissociation

Intermediate Technical IVT

Pupillary response pattern with absent light reflex but preserved near response.

Technical Term Full entry →

Marcus Gunn jaw winking

Professional Technical IVT

Congenital synkinesis causing eyelid elevation with jaw movement.

Technical Term Full entry →

metamorphopsia

Intermediate Technical IVT

Visual distortion where straight lines appear wavy, bent, or irregular.

Technical Term Full entry →

miosis

Intermediate Technical IVT

Constriction of the pupil to smaller than normal size.

Technical Term Full entry →
Showing 25–48 of 100

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