Like flags posted, if the dominance of your eyes and hands is different, the best way is to patch the dominant eye so the other eye will take over. We see this quite often on the shotgun ranges. Because it is also best to shoot with both eyes open, a small piece of frosty placed on the upper inside corner of the lens of your glasses of your dominate eye will block that eye from seeing your sights and you will be able to maintain your peripheral vision.

Make sure your gun is UNLOADED and sight your gun on the eye of a friend standing in front of you. Your friend will be able to look back through your sights to the pupil of your dominate eye. Put a 3/8" piece of frosted tape on your glasses in line with your eye pupil and your sights.