Taming the Beast (Astigmatism)

An interesting discussion on the mechanisms of reversing (or acquiring) astigmatism on a biological level came up on Denise’s latest topic, and after thinking, I decided that having it in a separate topic might be very helpful for future reference in case we get even more nice insights on the question.
On lens-induced astigmatism:

What is extremely confusing to me is that astigmatism reacts very well to stimulus over the short term. I spend ten minutes clearing the ghosting, it goes away, I enjoy my clear vision, I go to sleep, I wake up and the ghosting is back! It’s incredibly volatile, and I have no idea what mechanism gives tangible improvement so quickly and reverts back to its initial shape the moment I give it a chance.

I wonder if other people with astigmatism can relate to this kind of experience?

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Well those of us measuring cm to astigmatic blur seperately to cm to spherical blur also notice that the former varies a lot while the latter is relatively stable

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