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To my knowledge there are no known treatments to alter the dominance of one eye over another. Some people do not even demonstrate a dominance of one eye over another and other people have a strong dominance.
Some people have anecdotally practiced shooting with their non-dominant eye and learned how to do that reasonably well, but the problem then becomes when forced into a stressful situation, will you be able to subconsciously switch that preference for the originally dominant eye. It becomes a sticky situation.
But to address the question, I do not know of any way to permanently change this.
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