Elwin Marg (March 23, 1918 – July 15, 2010) was an American optometrist and neuroscientist at the University of California at Berkeley.
[2] During the Second World War, Elwin Marg served as a communications officer in the U.S. Air Force with postings in Ireland, Tunisia, and Italy.
During the Korean War he was reinstated for research at Wright-Patterson Air Force Base in Dayton, Ohio.
In collaboration with R. Stuart Mackay, an electrical engineer at UC Berkeley, he completed a design of tonometer, a device for measuring intraocular pressure, in 1959.
[6] In 1951 Marg described and named electrooculogram for a technique of measuring the resting potential of the retina in the human eye.