Having trouble seeing the reticle

A good, no a perfect image, still has to travel through a bad eye. An astigmatism is a wart on your cornea that distorts the image before it is projected onto your retina. It has to be corrected in your eyeglasses. I don't care how old or young you are, ask an optics expert, or eye doctor, if anything I said was incorrect. Even top notch astronomical eyepieces (Tele-Vue) are equipped to receive a personally ground lens for astigmatism, so that you don't have to wear your glasses for all night viewing, and you can get closer to the eyepiece than when wearing glasses.
When I shoot or spot I have found doing so without my glass greatly improves resolution plus it makes 500yd bullet holes look like 400 yds. Try it.