Why Argyll Robertson pupil is constricted?

11/09/2020 Off By admin

Why Argyll Robertson pupil is constricted?

Typically, the pupil constricts, or shrinks, in response to bright light and dilates, or expands, in response to dim light. The Argyll Robertson pupil occurs when a disease interferes with the light reflex pathway, thereby inhibiting the pupil’s natural response to bright light.

Where is the lesion in Argyll Robertson?

ARGYLL ROBERTSON PUPILS These features, as in patients with large pupils with light‐near dissociation, usually indicate a lesion in the rostral midbrain at the level of the posterior commissure.

How does syphilis cause Argyll Robertson pupil?

Argyll Robertson pupil is found in late-stage syphilis, a disease caused by the spirochete Treponema pallidum. Neurosyphilis occurs due to an invasion of the cerebrospinal fluid (CSF) by the spirochete which likely occurs soon after the initial acquisition of the disease.

What is Holmes Adie pupil?

Adie syndrome, or Holmes-Adie syndrome, is a rare neurological disorder affecting the pupil of the eye. In most patients the pupil is larger than normal (dilated) and slow to react in response to direct light. Absent or poor tendon reflexes are also associated with this disorder.

Does mydriasis cause blurred vision?

Benign episodic unilateral mydriasis (BEUM) is a temporary condition that creates a dilated pupil in only one eye. Often individuals with this condition will also experience a mild headache, eye pain, light sensitivity, and blurred vision during these episodes.

Is Argyll Robertson pupil unilateral or bilateral?

Argyll Robertson pupils (AR pupils) are bilateral small pupils that reduce in size on a near object (i.e., they accommodate), but do not constrict when exposed to bright light (i.e., they do not constrict when exposed to light).

What is the meaning of Argyll?

Definitions of argyll. a covered gravy holder of silver or other metal containing a detachable central vessel for hot water to keep the gravy warm. synonyms: argyle. type of: boat, gravy boat, gravy holder, sauceboat. a dish (often boat-shaped) for serving gravy or sauce.

How did the Argyll Robertson pupils get their name?

Argyll Robertson pupils were named after Douglas Argyll Robertson (1837–1909), a Scottish ophthalmologist and surgeon who described the condition in the mid-1860s in the context of neurosyphilis.

Who was Dr Douglas Robertson and what did he do?

Dr Douglas Moray Cooper Lamb Argyll Robertson FRSE, FRCSEd LLD (1837 – 3 January 1909) was a Scottish ophthalmologist and surgeon. He introduced physostigmine into ophthalmic practice and the Argyll Robertson pupil is named after him.

Who are the heirs of the first count of France?

A grandson of the first Count, Philippe d’Harcourt (1353/54-1403) married Jeanne de Tilly, Lady of Beaufou and Beuvron. Their grandson Jacques d’Harcourt (+ 1487) became Baron de Beuvron and his descendant Pierre d’Harcourt (1550-1627) was created Marquis de Beuvron in August 1593.

What did Douglas Argyll Robertson do for glaucoma?

Argyll Robertson was the first to publish a description of and results following a trephine operation for the treatment of glaucoma. Creating a small hole in the sclera ( anterior sclerotomy) to drain the aqueous humor, would, he reasoned, lower intraocular pressure.