I have no dominant eye

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I am neither right-eyed nor left-eyed. I self-administered several of the popular tests for eye dominance, and none of them shows any discernable dominance in my case. At first, I thought I must be special, because of all the monovision discussions talking about the importance, unimportance, or reverse importance of properly treating one's dominant and non-dominant eyes.


But apparently I am not that special. A 1929 study found that 17% of 172 test subjects showed either no dominance or inconsistent dominance. Neither I nor Google's AI were able to find a better number, and it's not the sort of thing I would expect to change much in 95 years, so I'm going with the 17%.


If you have no dominant eye, it's ok. You are not alone!

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    From a cataract surgery point of view I suspect this is not a problem, and perhaps even an advantage with mini-monovision. Your eyes should be more free to select the best image from the two eyes to give you good vision. I think to a large degree successful use of monovision depends on the brain's ability to select and use the best image available while rejecting poor quality images.


    Having a hard dominant eye may be an advantage for some sports that require aiming consistently. I am right handed but left eye dominant and I have decided that impacts my ability to shoot accurately with a shotgun. Normal practice with a shotgun is to shoot with both eyes open, and if your dominant eye is not aligned with the barrel you end up kind of cross firing. For that reason I close my left eye when using a shotgun. When using a scope on a rifle it does not may any difference as you only open the scope eye, and it obviously is precisely aligned with the barrel. Now after cataract surgery my distance eye is the right one, and that should encourage my brain to use it like a dominant eye, but I am not sure that happens. I have not used a shotgun since surgery so no practical experience to see what impact it has had.

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