. . "1918Z"^^ . . . "German physiologist" . . . "1918-01-26Z"^^ . . "Hering, Ewald"@en . . "Karl Ewald Konstantin Hering (August 5, 1834 \u2013 January 26, 1918) was a German physiologist who did much research into color vision, binocular perception and eye movements. He proposed opponent color theory in 1892.Born in Alt-Gersdorf, Kingdom of Saxony, Hering studied at the University of Leipzig and became a professor at Charles University in Prague."@en . "Ewald Hering"@en . . "1834Z"^^ . . "1834-08-05Z"^^ . .