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. 2014 Apr 22;9(4):e95764. doi: 10.1371/journal.pone.0095764

Figure 2. Tracking the pupil, PI (cornea) and PIV (lens).

Figure 2

Data correspond to two different subjects performing a horizontal center-temporal 9° saccade. The reference position is the left bottom corner of the CMOS camera sensor. Black circles represents PI (corneal reflection) position as a function of time (no wobbling observed), red circles are pupil positions (oscillations are clearly observed) and green circles corresponds to PIV (lens reflection) where post-saccadic oscillations are visually evident.