I have mild astigmatism. I see a comma with the rifle optic. Not as bad with the pistol especially if the dot is at lower brightness.

As far as durability. Let me give you a little background. I am a firearms instructor or was for my agency. We tested a bunch of different optics for use on our new duty pistols which are Glock G-45 9mm's. We tested all common optics. RMR, Delta Point Pro, Aimpoint Acro, Holosun 501 and some other odd ones.

We would shoot 100 rounds then drop the firearm from shoulder height directly onto the optic on concrete and alternation onto gravel/dirt every other iteration. We would inspect for damage check the zero and finish the 100 rounds and do it over again. We also used the optic to rack the slide. If the lens cracked we would continue as long as the sight worked and maintained zero. We several optics of the same make and model on the same platform and continued testing until two sights dominated the others. We were not kind to the optics.

Two sights we would consider duty grade. The Trijicon RMR type 2 and The AimPoint Acro. The rest had significant failures. I do like the Delta Point Pro and have one on a backcountry pistol.

We went with the RMR 06 Type 2. They claim battery life is 4 years but we are changing them out yearly and from anyone using them before us, this seems to be a solid plan and it would be rare to lose battery life with quality batteries before that time. Right now I think we are the largest agency in the nation that issues them to everyone. And the only one with our current duty weapon setup. That won't last long we were just a flagship agency for that setup.

I'm not saying there are never failures and in the 650 I helped set up we found a couple that were just bad right out of the box. But that's 2 out of the 650 I was involved with building. We also put suppressor sights on them and I did the same with the DPP on my personal gun. Everything has a chance to fail. So they are there as insurance. But the sight also still works with the front of the lens occluded as long as you use both eyes.

When I retired due to my length of service they gave me my final duty gun. Think of it as a gold watch. I liked the setup enough that I dropped the coin to purchase an optic for my old duty gun because they kept the optic. It's not the end all, do all and I still like iron sights for some things but this one will become my bump in the night gun. With practice, I'm just as fast and far more accurate than with iron sights.