He was keen on outdoor life, with interests in botany, marine biology, and zoology, spending his holidays collecting fossils. If the mobile pupil constricts when light is shined directly in the eye and dilates when light is shined in the opposite eye, there is an. Watch only the mobile pupil while alternating the light between the two eyes. He was an excellent surgeon and introduced systematized teaching of eye disorders. If one pupil is fixed due to neurologic disease, iris trauma or medication, check for an RAPD using the reverse Marcus Gunn test. A normal response would be equal constriction of both pupils, regardless of which eye the light is directed at. 3 In the swinging flashlight test, a light is alternately shone into the left and right eyes.
He was appointed as surgeon in 1888, and when he died in 1909 he was senior surgeon of that hospital. The Marcus Gunn pupil is a relative afferent pupillary defect indicating a decreased pupillary response to light in the affected eye. In 1882 Marcus Gunn obtained a fellowship of the Royal Surgeons, and the next year he was appointed assistant surgeon to the Moorfields Eye Hospital. On his return, he examined the zoological material collected by Charles Darwin’s Challenger expedition.
In 1879 Marcus Gunn went to Australia to collect eye specimens from the indigenous species, particularly marsupials. In this position he introduced the sterile principles of Joseph Lister, thus obtaining better results in cataract operations. In 1876 he returned to Moorfields Eye Hospital as a resident medical officer. In 1874 Marcus Gunn spent 6 months in Vienna, working with Christoph Friedrich Jaeger Ritter von Jaxtthal (1784-1871), Carl Ferdinand Ritter von Arlt (1812-1887) or Karl Stellwag von Carion (1823-1904) as a teacher. He then obtained a job at the Perth District Asylum where he surveyed the retinal appearances of the patients, employing direct ophthalmoscopy, which he had taught himself. As a student here he was influenced by James Syme (1799-1870) and Joseph Lister (1827-1912), and the ophthalmologist Douglas Moray Cooper Lamb Argyll Robertson (1839-1909).Īfter graduation he was house physician in Moorfields Eye Hospital, London, and also worked in comparative anatomy with Edward Albert Sharpey-Schäfer (1850-1935) at University College, London. It is also called Marcus Gunn syndrome or. Andrew’s and the University of Edinburgh, where he graduated, with distinction, in 1873. Marcus Gunn pupil is a rare condition in which a persons pupil does not respond to light correctly in one eye. He studied medicine at the University of St. We should seize the opportunity SQ 820 provides to generate desperately needed new revenue for our public schools, improve public health and safety through sensible regulations, and reduce unnecessary arrests and incarceration.Robert Marcus Gunn was the son of a farmer in Dunnet, in the far northwest of Scotland. Those states have not seen increases in teen use, and their residents have reaped the benefits from abundant new tax revenues. Twenty-one other states have already legalized marijuana over the past 10 years. I believe that State Question 820 is an important step in the right direction. It can easily be detected with swing flash test. When light is shone to the unaffected eye, both consensual and direct reflex will be present and when it will be shone to affected eye both the pupil will dilate. Here the near reflex will be present for both the eyes. More: What kind of marijuana policy will Oklahoma's legislature consider? Here are a few theoriesĪs a mother and grandma, I want what is best for my children and all children in Oklahoma. Relative afferent pupillary defect: Also known as Marcus Gunn pupil. Kids today face enough obstacles as it is let’s not make it harder for them to succeed. SQ 820 will not only stop arrests like this, but it also will allow people to expunge minor marijuana offenses from their records so minor mistakes don’t haunt them for their entire lives. Causes of a Marcus Gunn pupil include ischemic optic neuropathy, optic neuritis, nerve compression, trauma or through asymmetric glaucoma. It is fair to hold them accountable for that mistake, but they should not miss out on college or good jobs because of an arrest record related to an activity that has been decriminalized in large parts of the country. This damage leads to a relative afferent pupillary defect (RAPD), known as a Marcus Gunn pupil, which is examined using the swinging flashlight test. These are not drug kingpins we’re talking about they are children who have made a mistake. The current laws on marijuana have led to a large number of young adults being arrested and locked up. I am concerned about the harm that an arrest for possession of a tiny amount of marijuana can have on a young person’s life. Third, SQ 820 would stop unnecessary arrests of many Oklahomans.
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