Sasuke had Amaterasu before he took Itachi's eyes, like when he was fighting B. Not sure where you're getting your facts from. I will say I do support the fact that there could be a possibility of her taking Sasuke's eyes when he passes (I know Itachi went on about the failed attempts, but still, we've seen weirder twists, plus they're main characters which unfortunately breaks a lot of rules), or maybe finding a different way around the blindness like ninja tech, senju cells, maybe even using the Mitotic Regeneration in a way we haven't seen possible (since afaik, it doesn't conventionally heal cells but creates new ones through duplication).