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. Author manuscript; available in PMC: 2012 Nov 30.
Published in final edited form as: Seeing Perceiving. 2012;25(5):425–447. doi: 10.1163/187847611X620946

Figure 1.

Figure 1

Under conditions of extremely reduced acuity and contrast, it can be difficult to visually detect the concrete stand on which this light post rests. As a result, the post may be judged to be farther away than it actually is, thus representing a hazard to locomotion.