Elwin Marg (March 23, 1918 – July 15, 2010) was an American

optometrist Optometry is the healthcare practice concerned with examining the eyes for visual defects, prescribing corrective lenses, and detecting eye abnormalities. In the United States and Canada, optometrists are those that hold a post-baccalaureate f ...

and

neuroscientist A neuroscientist (or neurobiologist) is a scientist specializing in neuroscience that deals with the anatomy and function of neurons, Biological neural network, neural circuits, and glia, and their Behavior, behavioral, biological, and psycholo ...

at the

University of California at Berkeley The University of California, Berkeley (UC Berkeley, Berkeley, Cal, or California), is a public land-grant research university in Berkeley, California, United States. Founded in 1868 and named after the Anglo-Irish philosopher George Berkele ...

. He was the first to receive a PhD from UC Berkeley School of Optometry. It was he who gave the name electrooculogram, a technique for measurement of

nerve impulse An action potential (also known as a nerve impulse or "spike" when in a neuron) is a series of quick changes in voltage across a cell membrane. An action potential occurs when the membrane potential of a specific Cell (biology), cell rapidly ri ...

in the eye. He developed an improved

tonometer Tonometry is the procedure that eye care professionals perform to determine the intraocular pressure (IOP), the fluid pressure inside the eye. It is an important test in the evaluation of patients at risk from glaucoma. Most tonometers are calib ...

that avoided use of

anaesthetics An anesthetic (American English) or anaesthetic (British English; see spelling differences) is a drug used to induce anesthesia ⁠— ⁠in other words, to result in a temporary loss of sensation or awareness. They may be divided into tw ...

for the first time in optometrical diagnosis. With his wife he established a non-profit neuroscience organisation, the

Minerva Foundation The Minerva Foundation is a US-based non-profit, scientific and charitable foundation. It is headquartered in Berkeley, California. It was established in 1983 by Helen and Elwin Marg. Other than the founders, directors include Richard M. Buxbaum ...

in 1983.

Early life and education

Elwin Marg studied at the School of Optometry of the UC Berkeley. He entered an undergraduate course in 1938. In 1940, he received an AB in physiological optometry and a Certificate in Optometry. He completed PhD in 1950.

Professional career

During the

Second World War World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...

, Elwin Marg served as a communications officer in the

U.S. Air Force The United States Air Force (USAF) is the air service branch of the United States Department of Defense. It is one of the six United States Armed Forces and one of the eight uniformed services of the United States. Tracing its origins to 1 ...

with postings in

Ireland Ireland (, ; ; Ulster Scots dialect, Ulster-Scots: ) is an island in the North Atlantic Ocean, in Northwestern Europe. Geopolitically, the island is divided between the Republic of Ireland (officially Names of the Irish state, named Irelan ...

Tunisia Tunisia, officially the Republic of Tunisia, is a country in the Maghreb region of North Africa. It is bordered by Algeria to the west and southwest, Libya to the southeast, and the Mediterranean Sea to the north and east. Tunisia also shares m ...

, and

Italy Italy, officially the Italian Republic, is a country in Southern Europe, Southern and Western Europe, Western Europe. It consists of Italian Peninsula, a peninsula that extends into the Mediterranean Sea, with the Alps on its northern land b ...

. During the

Korean War The Korean War (25 June 1950 – 27 July 1953) was an armed conflict on the Korean Peninsula fought between North Korea (Democratic People's Republic of Korea; DPRK) and South Korea (Republic of Korea; ROK) and their allies. North Korea was s ...

he was reinstated for research at

Wright-Patterson Air Force Base Wright-Patterson Air Force Base (WPAFB) is a United States Air Force base and census-designated place just east of Dayton, Ohio, in Greene County, Ohio, Greene and Montgomery County, Ohio, Montgomery counties. It includes both Wright and Patte ...

Dayton, Ohio Dayton () is a city in Montgomery County, Ohio, United States, and its county seat. It is the List of cities in Ohio, sixth-most populous city in Ohio, with a population of 137,644 at the 2020 United States census, 2020 census. The Dayton metro ...

. He availed two

sabbatical A sabbatical (from the Hebrew: (i.e., Sabbath); in Latin ; Greek: ) is a rest or break from work; "an extended period of time intentionally spent on something that’s not your routine job." The concept of the sabbatical is based on the Bi ...

leaves at the Nobel Institute of Neurophysiology,

Karolinska Institute The Karolinska Institute (KI; ; sometimes known as the (Royal) Caroline Institute in English) is a research-led medical university in Solna within the Stockholm urban area of Sweden and one of the foremost medical research institutes globally ...

, Stockholm, working with

Ragnar Granit Ragnar Arthur Granit (30 October 1900 – 12 March 1991) was a Finnish-Swedish scientist who was awarded the Nobel Prize in Physiology or Medicine in 1967 along with Haldan Keffer Hartline and George Wald "for their discoveries concerning th ...

, future Nobel laureate, in 1956 and 1964, the latter under a

Guggenheim Fellowship Guggenheim Fellowships are Grant (money), grants that have been awarded annually since by the John Simon Guggenheim Memorial Foundation, endowed by the late Simon Guggenheim, Simon and Olga Hirsh Guggenheim. These awards are bestowed upon indiv ...

. He spent the rest of his career at UC Berkeley till his retirement in 1988. First as an instructor in optometry in 1950, then as an assistant professor of physiological optics and optometry in 1951, an associate professor in 1956, and finally full professor in 1962. He published 99 technical papers in various areas. In collaboration with R. Stuart Mackay, an electrical engineer at UC Berkeley, he completed a design of tonometer, a device for measuring

intraocular pressure Intraocular pressure (IOP) is the fluid pressure inside the eye. Tonometry is the method eye care professionals use to determine this. IOP is an important aspect in the evaluation of patients at risk of glaucoma. Most tonometers are calibrated t ...

, in 1959. This groundbreaking instrument was named Mackay-Marg Tonometer, after the developers. This new tool did not require an anaesthetic and thus, for the first time, allowed optometrists to measure intraocular pressure more conveniently. In 1951 Marg described and named electrooculogram for a technique of measuring the

resting potential The relatively static membrane potential of quiescent cells is called the resting membrane potential (or resting voltage), as opposed to the specific dynamic electrochemical phenomena called action potential and graded membrane potential. The re ...

of the retina in the human eye.

Personal life

Elwin Marg died in Berkeley in 2010, survived by his daughter Tamia Marg Anderson. His wife Helen had predeceased him in 2001.

Awards and honours

*Guggenheim Fellowship in 1963. *Apollo Award of the

American Optometric Association The American Optometric Association (AOA), founded in 1898, represents approximately 37,000 doctors of optometry, optometry students and para-optometric assistants and technicians in the United States. Overview The AOA states that: The American ...

in 1962 *Glenn Fry Award of the

American Academy of Optometry The American Academy of Optometry (AAO) is an organization of optometrists based in Orlando, Florida. Its goal is to maintain and enhance excellence in optometric practice, by both promoting research and the dissemination of knowledge. The AAO hol ...

in 1972 *Elected fellow of the

American Association for the Advancement of Science The American Association for the Advancement of Science (AAAS) is a United States–based international nonprofit with the stated mission of promoting cooperation among scientists, defending scientific freedom, encouraging scientific responsib ...

*Elected fellow of the American Academy of Optometry *Charles F. Prentice Medal of the American Academy of Optometry in 1981 *Berkeley Optometry Alumnus of the Year in 1993 *Inducted into the Berkeley Optometry Hall of Fame in 2002

References

External links

Birth and death record at AncientfacesInformation at UC Berkeley
{{DEFAULTSORT:Marg, Elwin 1918 births 2010 deaths American neuroscientists University of California, Berkeley alumni