I’m not an eye doctor - just a guy with astigmatism in both eyes… But my understanding is that astigmatism can happen in multiple ways because it is due to the eye being non-spherical, etc.

Meanwhile, there are limits to what glasses or contacts can do to correct this. Only so many ways a lens can bend light at one time.

I think that’s what leads to people seeing different things, even with glasses on, when it comes to visual distortions like starburst patterns around lights.