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One thing I found using binoviewers is that the brain seems to do a summation of the incoming images of both eyes and selects the best possible image. I have astigmatism in my right eye, which is my dominant eye. When looking at anything with my glasses on, by looking with my right eye i see remaining astigmatism. When looking with my left eye, the astigmatism is no longer apparent. With both eyes open, my brain gives me a view with the best(left) eye image. So with binoviewing i get the comfort of using both eyes with the astigmatic correction of my left eye. It's a winner for me. So astigmatism in one eye worse than the other should not put you off binos.
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