Astigmatism - Gideon Optics Omega Red Dot Reflex Sights

I own about 15 different red dots for my different firearms. Anytime I see a new red dot I have to try it out and see how the red dot looks like with my astigmatism. The omega red dot was worse than most but through my camera lens it looked fine . So I returned it and ordered the green. Other then that the red dot looked great and seems like it would hold up. It’s strange, some red dots look fine even with my astigmatism and others look like swan. Usually the green dot does better but I just prefer a red dot.