Herzau-Ogle phenomenon

Herzau-Ogle phenomenon

[¦hārt·sau̇ ′ō·gəl fə′näm·ə‚nän]
(psychology)
An effect whereby identical geometrical figures seen with stereoscopic vision are perceived as double when there is unequal enlargement in the two eyes, or when corresponding retinal positions do not correspond to the same geometrical points.