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Eternal_Revolution t1_jdeufyz wrote

Reply to comment by junegoesaround5689 in How do the two eyes see in registration with one another? by ch1214ch

another version is make a triangle with your fingers. With both eyes open, line up on a distant object.

Without moving, close one eye and then the other.

Your dominant eye will still have the object centered. Your subordinate eye will cause the "window" of your fingers to move.

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ffenliv t1_jdm8jgg wrote

I learned of this recently and have tried dozens of times in different locations. No matter which I eye close and which method I use, the thing I'm looking at appears to move. I always assumed this was true for everyone, not having heard of dominant eyes before a few weeks ago.

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