A brainstem lesion of any type that involves the medial longitudinal fasciculus ( MLF) can cause internuclear ophthalmoplegia (INO). This primarily affects. Internuclear ophthalmoplegia is an ocular movement disorder caused by a lesion of the medial longitudinal fasciculus. It is characterized by. Internuclear ophthalmoplegia is the inability to move both your eyes together when looking to the side. It can affect one or both of your eyes.

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The INO can be unilateral or bilateral and may present with or without neurologically isolated other brainstem findings. Dacryoadenitis Epiphora Dacryocystitis Xerophthalmia.

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Internuclear ophthalmoplegia

Support Center Support Center. Privacy policy About EyeWiki Disclaimers. Acute internuclexr require hospitalization and neurological evaluation. If double vision diplopia is one of your symptoms, your doctor may recommend a botulinum toxin injection, or a Fresnel prism.

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Inflammatory encephalitis affecting the brainstem e. A stroke can be called ischemia, or an ischemic attack. We use cookies to understand site usage and to improve the content and offerings on our sites. Ischemic INO may occur in relative isolation and without other neurological deficits.

What are the causes?

An interesting presentation of INO. Discussion Internuclear ophthalmoplegia INO is a deficit in the control of conjugate eye movements, which results from damage to the medial longitudinal fasciculus MLF.

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Internuclear Ophthalmoplegia

Comments An interesting presentation of INO. Paralytic strabismus Ophthalmoparesis Chronic progressive external ophthalmoplegia Kearns—Sayre syndrome.

A Fresnel prism is a thin plastic film that attaches to the back surface of your eyeglasses to correct double vision. Schematic ophthalmop,egia of MLF and associated structures.

Causes of internuclear ophthalmoplegia INO include: Exotropia is thought to occur due to disruption of the input from otolithic organs.

This produces an ipsilateral horizontal gaze palsy in addition to an ipsilateral INO [6]. Internuclear ophthalmoplegia Schematic demonstrating right internuclear ophthalmoplegia, caused by injury of the right medial longitudinal fasciculus.

Learn how to perform these exercises at…. What are the different ophthhalmoplegia Hemianopsia binasal bitemporal homonymous Quadrantanopia. According to some studies, recovery is also said to ophthalmoplegis less likely if there was a visible lesion ophthalmoplegja internuclear ophthalmoplegia. However, recent studies have disproved this theory and retained convergence is thought to reflect the innate ability to converge to near targets.


Generally, INO symptoms improve with time. Questions To access free multiple choice questions on this topic, click here.

When an attempt is made to gaze contralaterally relative to the affected eyethe affected eye adducts minimally, if at all. Due to a mismatch in saccadic movements between the eyes, patients may also report difficulties in tracking fast-moving objects [3].

Multiple inteernuclear — most common cause in young adults. Notably, the absence of concomitant neurological signs, such as vertigo, ataxia, sensory symptoms, dysarthria, facial palsy, or pyramidal tract dysfunction, has been shown to be significantly correlated with a more rapid recovery [1, 5]. This book is distributed under the terms of the Creative Commons Attribution 4.

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