Robert Marcus Gunn (1850,Dunnet – 29 November 1909,Hindhead) was aScottishophthalmologist remembered forGunn's sign and theMarcus Gunn pupil.

Gunn went to school inGolspie, then studied medicine at theUniversity of St Andrews and theUniversity of Edinburgh, graduating with distinctionM.A. in 1871 andM.B.,C.M. in 1873.^[1] He was influenced byJames Syme,Joseph Lister andDouglas Argyll Robertson during his studies. He taught himself directophthalmoscopy, a skill for which he would later become particularly noted.

Gunn was ahouse physician atMoorfields Eye Hospital and then worked in comparative anatomy atUniversity College Hospital. He worked at the Perth District Asylum during the summers of 1874 and 1875, where he examined thefundi of all the patients. He spent 6 months inVienna working underEduard Jäger von Jaxtthal. He returned to Moorfields in 1875, becoming junior house surgeon and then senior house surgeon in 1876. He introduced Lister's sterile technique, improving the results ofcataract surgery.

In December 1879, Gunn travelled to Australia to collect eye specimens from indigenous animals, publishing work on comparative anatomy of the eye in theJournal of Anatomy and Physiology. He also examined specimens from theChallenger expedition after his return to England.

Gunn became aFellow of the Royal College of Surgeons in 1882 and became assistant surgeon at Moorfields in 1883 and surgeon in 1888. He was also appointed ophthalmic surgeon to theHospital for Sick Children in 1883 and to theNational Hospital for the Paralysed and Epileptic, Queen Square in 1886. In 1898 he was Vice-President of the Section of Ophthalmology of theBritish Medical Association, and was President of the section in 1906. He was President of the Ophthalmological Society in 1907, at which time he was senior surgeon at Moorfields. In this role, he introduced the systematic teaching of eye disease which had impressed him in Vienna previously.^[1]

Robert Marcus Gunn atWhonamedit?

• Scottish ophthalmologists
• Alumni of the University of Edinburgh
• 19th-century Scottish medical doctors
• 20th-century Scottish medical doctors
• Fellows of the Royal College of Surgeons of England
• 1850 births
• 1909 deaths

• Articles with short description
• Short description matches Wikidata
• Use dmy dates from September 2017
• Use British English from September 2017