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Fast-phase horizontal eye movement vision Fast-phase vertical eye movement vision. Nystagmus is highly noticeable but rarely recognized. Nystagmus can be clinically investigated by using a number of non-invasive standard tests. The simplest one is the caloric reflex test, in which one ear canal is irrigated with warm or cold water or air.
The European Journal of Neurology published an article in 2007 that examines a case study of a six-year-old child with Anton syndrome and early stages of adrenoleukodystrophy. The child reportedly had abnormal eye movements, would often fall, and would reach for things and often miss his target.
This condition is characterized as a synkinesis: when two or more muscles that are independently innervated have either simultaneous or coordinated movements. [1] [2] Common physiologic examples of synkineses occur during sucking, chewing, or conjugate eye movements. There are also several abnormal cranial nerve synkineses, both acquired and ...
Vestibulocerebellar syndrome, also known as vestibulocerebellar ataxia, is a progressive neurological disorder that causes a variety of medical problems.Initially symptoms present as periodic attacks of abnormal eye movements but may intensify to longer-lasting motor incapacity.
Parinaud's syndrome is a cluster of abnormalities of eye movement and pupil dysfunction, characterized by: Paralysis of upwards gaze: Downward gaze is usually preserved. This vertical palsy is supranuclear, so doll's head maneuver should elevate the eyes, but eventually all upward gaze mechanisms fail. In the extreme form, conjugate down gaze ...
A horizontal gaze palsy is a subtype of gaze palsy in which conjugate, horizontal eye movements are limited by neurologic deficits. Horizontal gaze palsies typically result from an ipsilateral pontine lesion or a contralateral frontal lobe lesion. [1]
Two images of the same child. The top image shows the left eye slightly cross-eyed. This is fixed in the bottom picture by stretching the extra skin around the eye. A deviated gaze is an abnormal movement of the eyes. It is often found as a symptom for subdural hematoma or some people may have it from birth.
Ataxia telangiectasia results from defects in the ataxia telangiectasia mutated gene, which can cause abnormal cell death in various places of the body, including brain areas related to coordinated movement of the eyes. Patients with ataxia telangiectasia have prolonged vertical and horizontal saccade latencies and hypometric saccades, and ...