What causes gaze palsy?
A lesion of the vertical gaze pathways can occur from a number of causes: Tumor- pineal germinoma or teratoma (classically seen in adolescent male), pineocytoma, pineoblastoma, tecal glioma, or metastasis. VGP can also occur secondary to paraneoplastic effect (ex. anti-MA2 encephalitis).
What is Palsy gaze?
A conjugate gaze palsy is inability to move both eyes together in a single horizontal (most commonly) or vertical direction.
What causes horizontal gaze palsy?
Horizontal gaze palsy is usually due to lesions of supranuclear, nuclear, and infranuclear pathways of horizontal of eye movements in the pons. Palsy of all types of horizontal movements implicates the abducens nucleus, whereas palsies of saccades alone are due to lesions of the parapontine reticular formation.
What is upward gaze palsy?
Up gaze palsy is one of the most common initial presenting complaints in patients with PS and is present in 87-100% of patients. Limited upward gaze often leads to a preference for downward gaze in primary position and is described as the setting-sun sign.
How do I check my gaze palsy?
Diagnosis. A patient may be diagnosed with a conjugate gaze palsy by a physician performing a number of tests to examine the patient’s eye movement abilities. In most cases, the gaze palsy can simply be seen by inability to move both eyes in one direction.
What does left gaze palsy mean?
Definition. Lateral gaze palsy is an inability to produce horizontal, conjugate eye movements in one or both directions.
What is conjugate gaze palsy (gaze palsy)?
A conjugate gaze palsy is inability to move both eyes in a single horizontal (most commonly) or vertical direction. (See also Overview of Neuro-ophthalmologic and Cranial Nerve Disorders.) Gaze palsies most commonly affect horizontal gaze; some affect upward gaze, and fewer affect downward gaze.
How does vertical gaze palsy affect movement?
Vertical gaze palsies affect movement of one or both eyes either in upward direction, up and down direction, or more rarely only downward direction. Very rarely only movement of one eye in one direction is affected, although by definition this is not a conjugate gaze palsy, because by definition conjugate gaze palsies affect movement of both eyes.
What is the most common cause of gaze palsy?
Gaze palsies most commonly affect horizontal gaze; downward gaze is affected least often. Common causes include strokes for horizontal gaze palsies, midbrain lesions (usually infarcts and tumors) for vertical gaze palsies, and progressive supranuclear palsy for downward gaze palsies. Treat the underlying disorder.
What are the congenital syndromes with horizontal gaze palsy?
• Congenital syndromes with horizontal gaze palsies include Mobius syndrome, Cogan congenital ocular motor apraxia, and horizontal gaze palsy with progressive scoliosis. Gaze palsy is an ambiguous term.