Fixation and Distraction (Visual Depth Perception 5)

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This Demonstration shows the horizontal "fixation plane" of the eyes. The observer is looking mainly at F, but also sees D. The point F is called the "fixate" and the secondary point D the "distractor". You can drag the base point, B, fixate point, F, and distractor point, D. The slider lets you move the direction of the aim of the head.
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Contributed by: Keith Stroyan (March 2011)
Open content licensed under CC BY-NC-SA
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For more information on the fovea, see the Wikipedia entry.
Permanent Citation
"Fixation and Distraction (Visual Depth Perception 5)"
http://demonstrations.wolfram.com/FixationAndDistractionVisualDepthPerception5/
Wolfram Demonstrations Project
Published: March 7 2011