a theoretical circle in space anterior to a viewing party comprised of points which will land on associated retinal locales inside the eyes whenever a point on the circle is focused.

VIETH-MTILLER CIRCLE: "The Vieth-Muller Circle was named as its founders, J.P. Muller and G.U. Vieth."
Cite this page: N., Pam M.S., "VIETH-MTILLER CIRCLE," in, April 29, 2013, (accessed October 25, 2020).