Board Thread:Questions and Answers/@comment-29091891-20160807234029/@comment-29382958-20160813182105

I'm not sure, but it is possible that he can heal his eyes and eyesight. As Haise Sasaki he wore glasses when he was reading books/doing paperwork at first, and after he regained his memories he started to wear them all the time. BUT as soon as he decided to fight Arima in order to save his friends, he didn't need glasses. We shouldn't forget that he was able to regrow both of his eyes multiple times after the first fight with Arima, when he was a prisoner in Cochlea. And being a Half-Human doesn't mean that the eyesight starts to weaken at a very young age. Arima needed glassen, but Hairu and Furuta for example didn't.