I suck at optics, and optics is a hard topic, so I say it will full humility: I’m always surprised that headset manufacturer can’t correct for most of these vision issues in software.
I think you'd need to be able to control the direction of each photon coming out of the screen, so that it landed in the intended place on the retina after going through the misshapen cornea/lens. That's basically what a corrective lens does. Doing it dynamically for each thing we call a pixel indeed sounds like science fiction.
you could do it with lasers, using lasers to draw directly on the retina. I don't think there would be any way to do this with a pixelarray type screen.. maybe if you could map each pixel to a point on your retina and then modify the rendering .. maybe. the concept reminds me of a generative art piece that Kyle McDonald built: https://www.fastcompany.com/90167836/disco-meets-computer-vi...
Essentially pile up a bunch of mirrorballs. Point projectors at it. Then map where each pixel from each projector ends up on the walls/ceiling/floors.
