For people's information on here as it's a question that comes up a lot, I got my initial Class 1 with Astigmatism of 3.25 in both eyes. My AeMC cleared me as fit to fly on the provision that I carry spare spectacles with me. I had to undertake a barrage of tests and eyesight imaging that cleared me of any eye disease or illness.
I was told having a strong astigmatism would rule me out from being able to fly when I was younger and put off following my career. But it turns out that it's not true.