While Kaworu’s design choices likely have nothing to do with albinism, imagine if Kaworu had albinism, which often brings with it severe vision problems that cannot be readily fixed through corrective eyewear.
What if, instead of relying on vision, Kaworu could sense A.T. Fields (including the ones surrounding the souls of lilim)? This explains how Kaworu was able to pinpoint Misato’s location across that huge lake. It’s not that Kaworu has incredible eyesight, but just the opposite. Note that Kaworu would have difficulty manoeuvring around anything nonliving.
The same would also apply to Rei.