I have struggled with strong cross dominance ever since I took up shotguns and have never progressed beyond stubbornly mediocre. Although I can occasionally hit a few targets with both eyes open, it never lasts so I shoot with a bit of tape on my left lens. Even with glasses, my right (nondominant) eye doesn't have the visual acuity of my dominant left eye and I have recently been told that it is developing a cataract. I hope that better vision after surgery will improve my shooting.