When measuring incomitant deviations with prisms with each eye âfixing,â it is imperative to switch the prism to always be before the non-fixing eye. Otherwise the âfixingâ eye behind the prism will not truly be looking in the intended direction, and major measurement errors can occur.
Gestalt is a general description for the concepts that make unity and variety possible in design. It is a German word that roughly translates as whole or form.. Gestalt theory is involved with visual perception and the psychology of art among other things.
Closure is a subcomponent of gestalt theory. The German word gestalt translates as unified whole.. Gestalt theory originates from 1920s German psychology, and was a reaction to the prevailing theory of the time, atomism.