What is tonic eye deviation?

Acute cerebral lesions cause tonic ocular deviation, loosely classified as irritative or paralytic. 1. Irritative deviations occur secondary to focal seizure activity or acute cerebral haemorrhage and the eyes are tonically deviated to the opposite side.

What does Disconjugate eye movement mean?

Dysconjugate gaze is a failure of the eyes to turn together in the same direction.

What is the difference between Saccade and nystagmus?

Saccadic intrusions are more often nonrhythmic, intermittent, and unsustained. The initial abnormal eye movement with nystagmus is always a slow drift of the eyes that is also called a slow phase; in contrast, saccadic intrusions are initiated by a fast saccadic eye movement.

What causes paroxysmal tonic Upgaze?

Paroxysmal tonic upgaze (PTU) is a syndrome of childhood manifesting as sudden ocular movements with sustained upward deviation of the eyes. We describe the outcome of 6 patients, after a follow-up of 10 years, with onset of the disease in childhood.

Is ocular flutter serious?

This case illustrates the need to correctly identify oscillopsia among cases of self-reported dizziness, and ocular flutter itself as a presenting sign of potentially serious underlying disease.

What causes a flutter in your eye?

The exact cause of eye twitching is not known, but the condition can originate in the motor nerves of the brain. Dry eyes, stress, fatigue, eye strain, and certain medications can contribute to an episode. Eye twitching is temporary in most cases and goes away on its own.

Does paroxysmal tonic Upgaze go away?

Symptoms are frequently relieved by sleep and can be exacerbated by fatigue or illness. Although PTU generally tends to disappear spontaneously within a few months or years, subsequent case reports have demonstrated the heterogeneous nature of the syndrome with respect to outcome.

How common is paroxysmal tonic Upgaze?

PTU was first described in 1988. As of 2002, approximately fifty cases had been diagnosed. Because the condition is so rare, the majority of physicians have never seen it, and thus may not recognize it.

What causes gaze deviation in stroke?

In the case of strokes, restriction of horizontal gaze on one side is usually due to damage of the contralateral frontal cortex or ipsilateral pontine area.

What does Dysconjugate gaze indicate?

Unpaired movements of the eyes.