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Supertopics:
Visible Light
Particular Senses

Vision / Sight / Seeing

Subtopics:
Color
Psychology of Color
Copyrighting Colors
Eye Medicine (The Field of Medicine)
Eye Problems
Optometry and Ophthalmology
Optical Illusions
cafe wall optical illusion
webVictoria Skye
the mind-boggling Ames window illusion (video)
webYouTube2018-09-01