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. Author manuscript; available in PMC: 2007 Dec 1.
Published in final edited form as: Invest Ophthalmol Vis Sci. 2006 Dec;47(12):5295–5302. doi: 10.1167/iovs.05-1043

Figure 2.

Figure 2

Examples of bi-dimensional histograms of vertical and horizontal eye position for two subjects and two conditions: a) normally sighted subject (1_NS) indoors and b) outdoors; c) PFL patient (2_RP) indoors, and d) outdoors. Note the change in pattern for the PFL patient between the two environments. Ordinates indicate the percent of valid frames for which the eye was within each bin area. The spatial position on the abscissas is relative to the central fixation point on the portable calibration grid.