Amaurotic nystagmus

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Amaurotic nystagmus
Other namesVisual Deprivation Nystagmus
Specialty Ophthalmology, Neurology

Amaurotic nystagmus is defined as the nystagmus associated with blindness or the central vision defects. [1] [2] It is characterized by the pendular or jerky movements of the eyes in the patients who have visual impairment for a long period of time. [3]

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Pendular nystagmus is a sinusoidal oscillation, which refers to the waveform of involuntary eye movements that may occur in any direction. It is characterized by the multidimensional slow eye movements of the eyes with an equal velocity in each direction that resembles the trajectory of a pendulum. These pattern of these movements may differ between the two eyes. Depending upon the pattern of movements, pendular nystagmus has been divided into different subtypes such as congenital nystagmus, acquired pendular nystagmus, and amaurotic nystagmus.

References

  1. Miller, Maurice H.; Schein, Jerome Daniel (2008). Hearing Disorders Handbook. Plural Publishing. ISBN   9781597568388.
  2. "amaurotic nystagmus". Academic Dictionaries and Encyclopedias. Retrieved 2017-12-16.
  3. Agarwal, Amar (2015-05-10). Manual of Neuro-ophthalmology. JP Medical Ltd. ISBN   9789351527824.
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