Figure 5. Typical ensemble convergence responses from a far initial vergence position of 1° (left) and from a near initial vergence position of 12° (right) after two sustained fixation conditions from subject S1.

Plots A and B are after the 1° sustained fixation task / far adaptation; plots C and D are after the 16° sustained fixation task / near adaptation. The subject fixated on a sustained fixation target for 3 minutes and then each step response was recorded after 30 seconds of sustained fixation.