I should wear my glasses but I don’t. I think regular sights give a clearer site picture during the day than night sights. I’m seriously thinking about the Big Dot Site, people say they’re great for old tired eyes.

XS Sight Systems, Inc. - Product Detail - DXW Big Dot - S&W M&P SHIELD - $110.00

XS Big Dot 25 yards with sub-compact (M&P Shield 9mm) - YouTube