Figure 1 : Stevens' exponent measurements of the real object distance judgments obtained for the control (A-C) and low
vision subjects (B-D).

The superior graphics represent the judgment to egocentric stimuli and the inferior graphics the judgment to exocemtric
stimuli. Exponent values more than 1.0 means an expansive judgment and exponent less then 1.0 indicates a compression
perception. The high correlation coefficient is resulted by the high accordance in the subjects judgment.

Costa et al.Journal of Integrative Psychology and Therapeutics  2014 2:1DOI : 10.7243/2054-4723-2-1