I have two. Burris Fastfire 3 moa and Trijicon RMR 1moa dot.
I am still working the different glasses angle. Contacts were not a help. Heading to Namibia on Sept 30th. I have the double with the burris working well. Swift A-frames and Hornady DGS hitting in the same spot, off sticks with my glasses I am in a 4 inch circle with all four shots. PS, I am not old at 50, my eyes have just starting going over the last year but badly. Good luck everyone.
I have experienced some of the starburst/corona effect on red dots.
Mostly on the less expensive models (ie Burris & Vortex).
This is the first I've heard of it on a Trijicon.
I've heard mixed results using either Rx or polarized lenses to try to correct it.
What I do know is that if you move to a Holographic sight, it goes away.
Currently the EO Tech makes a really nice one, the EXPS3.
Downside is that it is ugly as hell, moves your head off the stock and eats batteries.
For every plus...a minus.
I still feel the same, the best option is a well fitted stock for reflex/snap shooting.
Sights that naturally align with your eye, with your cheek on the stock.
It should be so natural that you are not even seeing the sights.
It's like looking down the barrel and point shooting.
BTW - I turned 50 this year as well, may we stay forever young at heart.
Best of luck on your upcoming hunt.