Quote Originally Posted by Daryll View Post
Even prescription glasses don't always correct astigmatism.... I thought my red-dot sights were fuzzy because they were cheap, until I saw the YouTube video and realised I had an astigmatism.

I had an eye test a few weeks ago as I thought my sight in my shooting (right) eye was deteriorating.

The local optician said my eyes hadn't changed, and when i mentioned astigmatism, he said i'd always had it...

I wasn't happy with that, so went to Vision Express and had another eye test... they said they could correct the astigmatism, and while testing my right eye diagnosed cataracts forming..

I eventually got the glasses from Vision Express... and my red-dots are still fuzzy...
An astigmatism causes a circle to appear oval, not fuzzy.
I suspect that your problem is that your cataracts are causing the blurring of the red dot or that your eye and lens of the specs cannot focus properly on the red dot.