I have an SW 617 and a Volquartsen Scorpion. I want to put a sight on the Volquartsen, but I have an astigmatism. The astigmatism doesn't affect me day-to-day, but it does impact the way that I see red dot sights. Do you have any recommendations for an etched reticle pistol sight or a prism pistol sight? I have read that they reduce the impact of astigmatism.