walleye/crosseye

[P3D John Dukes <dukes@xxxxxxxxxxxxxxxx>]

There have been some fine theories posted as to why cross-eyed 
viewing gives what seems to be a smaller image. They're no doubt
valid.  But not knowing how brains work I took a simplistic
approach: I drew a sketch on a piece of paper of two eyes spaced
at two and a half inches looking at two side by side three inch
images at a distance of nine inches. 

Son-of-a-gun if the cross-eye view doesn't put the eyes about
10% farther away from the centers of the images. Hence, I would
suppose, about 10% smaller on the retina.

Since I can only cross my eyes under extreme duress, I can't 
easily estimate the apparent reduction. Anyone have a guess
(for a given size of image and viewing distance?)

In other words, does this explain it?

John Dukes


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