There is a great long Victor/Sherlock fic on AO3 in which Victor is blind and Sherlock gets bitten by his dog and they become friends

It's set during Sherlock's uni days so it's not really what you were after but still, I adore this fic

Don't Is Not the Same as Haven't: https://archiveofourown.org/works/513943

(It's part of a series but can definitely be read as a stand alone, I haven't even read the other fics, so)