Visual acuity could improve to the extent that one could visualize the cells on one's fingertip held ca 1 cm from the eye.
heh, reminds me of my mother. She's really nearsighted but she can take an object and hold it right in her face, and see incredible detail that I'd need a strong magnifying lens to see. She'll look at a persian rug and be able to see detail in how the knots are tied to the warps.
