'Horopter' definitions:

Definition of 'Horopter'

From: GCIDE
  • Horopter \Ho*rop"ter\, n. [Gr. ? boundary + ? one who looks.] (Opt.) The line or surface in which are situated all the points which are seen single while the point of sight, or the adjustment of the eyes, remains unchanged. [1913 Webster]
  • The sum of all the points which are seen single, while the point of sight remains unchanged, is called the horopter. --J. Le Conte. [1913 Webster]