Optical illusion
visually perceived images that differ from objective reality
phosphene
stereogram
missing square puzzle
checker shadow illusion
Spinning Dancer
forced perspective
motion aftereffect
figure–ground
Fraser spiral illusion
Troxler's fading
film effect
My Wife and My Mother-in-Law
irradiation illusion
Hollow-Face illusion
Necker cube
foreshortening
Bezold effect
The dress
Circle of confusion
Thatcher effect
Schroeder stairs
anamorphosis
grid illusion
leaning tower illusion
crater/dome illusion
Illusory contours
Sander illusion
peripheral drift illusion
Chubb illusion
rabbit–duck illusion
lilac chaser
Lunar X
Ames room
Ames room
ambiguous image
Ames trapezoid
pareidolia
pareidolia
persistence of vision
Fechner color
flash lag illusion
geometrical-optical illusion
Stepping Feet Illusion
Shepard tables
stroboscopic effect
horsemaning
impossible object
McCollough effect
neon color spreading
Afterimage