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Left Lateral Rectus (Abducens nerve) Palsy

Left lateral rectus palsy

This video shows a person with left lateral rectus palsy. On asking him to look to the left side, he can not move the left eyeball completely, and it stops in the middle. However, on asking him to look to the right side, both eyeballs move normally.

Lateral rectus muscle is supplied by the abducens nerve (also known as abducent or sixth cranial nerve) and is responsible for abduction (or outward movement) of the eyeball.

There are many causes of sixth cranial nerve (lateral rectus) palsy. In this case, it was due to diabetic cranial mononeuropathy. It can also be caused by orbital apex syndrome or cavernous sinus thrombosis. It can be a false localising sign in patients with raised intracranial pressure.


Published by Dr Sudhir Kumar MD (Medicine) DM (Neurology)

I am a doctor with 25 years experience. I have worked as a neurologist for about 20 years. Educating public and healthcare professionals is very dear to me. This is possible due to my interactions with thousands of patients and their caregivers. I salute the patients who suffer and it is our duty to minimise suffering by preventing diseases and ensuring prompt diagnosis and treatment of those already affected.

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