Near Stereopsis Tests
The Stereopsis tests are displayed by selecting the Stereo icon on the Primary toolbar or pressing F4 on the keyboard or Duo on the remote control handset.
Stereopsis refers to the ability of the visual system to interpret the disparity between the two retinal images leading to the perception of distance or depth. Stereopsis is quantified in terms of stereoacuity which is the minimum angular disparity which can be perceived. Normal stereroacuity varies between approximately 10 and 100 seconds of arc depending on the method/ test used.
Test Chart 2016 includes three test configurations for assessing stereopsis:
The three test configurations may be selected by selecting the corresponding buttons on the Secondary Toolbar or pressing 1,2 or 3 on the keyboard. Alternatively, pressing the Horizontal Control keys on the keyboard or remote rotates around the three test options.