I always used to use red-dots on my close range competition guns (10/22 and Marlin 1894), but over the years found they were becoming more stars than dots... I thought it was because I was buying cheap sights, until I saw this on YT:https://www.youtube.com/watch?v=WPZ76Oz ... ex=1&t=35s
When I next had my eyes tested, it was confirmed that I had astigmatism, so I moved away from red-dots and moved to low powered scopes and peep sights.
10 years later, after finding scopes were now not looking right, I was diagnosed with cataracts in my right (shooting) eye.
A few months ago I had surgery for the cataracts, and it looks like the new lens has also corrected the astigmatism..!!
I think I'll leave the peep sights on my underlevers, but go back to red-dots on my "action" guns, and leave the scopes on the "precision" guns.