Probably much easier to do something to shift the dominance to the right eye. If they are truly balanced, a darker tint lense in the left eye should do the trick. You don't want to eliminate the vision from the left eye, just lower its dominance. You might also be able to use a lense that is just slightly off focus for the left eye, which should shift dominance. I know most of us have seen the Scotch tape trick on the left lense, but I've found it very distracting.