Ophthalmoplegia

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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Ophthalmoplegia

 

a paralysis of one or more cranial nerves by which the eye muscles are innervated. Ophthalmoplegia may be congenital—a result of underdevelopment of the nuclei of the oculomotor nerves—or acquired as a sequela of inflammatory, toxic, or traumatic lesions in the brain. It can occur in one or both eyes.

Several forms of ophthalmoplegia are distinguished. External ophthalmoplegia is a paralysis of the external ocular muscles with retention of function in the internal muscles. Internal ophthalmoplegia is a paralysis of the internal ocular muscles with retention of function in the external muscles. Total ophthalmoplegia is a paralysis of both internal and external muscle groups. With the external form, the eyeball becomes rigid, although the pupillary reaction to light is not affected. With the internal form, the movements of the eyeball remain normal, but the pupillary reaction disappears and accommodation and convergence are impaired. Ophthalmoplegia is treated by eliminating the underlying cause.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Diplopia results from an eye movement abnormality known as internuclear ophthalmoplegia. Maria has continued to experience recurrent bouts of double vision, which have improved without treatment.
(5) Brainstem syndromes such as internuclear ophthalmoplegia and persistent hiccup/vomiting with corresponding MRI changes
(1) We hereby report a case of a 15 years old girl who presented with fever and binocular diplopia due to left sided internuclear ophthalmoplegia (INO).