One of the biggest questions I get about the boys and OCA is: what can they see? The short answer is that each person with albinism has varying vision, but generally it's like a low-resolution digital picture.
The longer, much better answer is in this video presentation by NOAH. I'm SO glad this is finally available in a form I can share because the information and pictures are invaluable! It's a little long, but if you want to get the general idea quickly, fast forward to the part that shows visual representations of what a person with 20/20 vision sees compared to what someone with 20/100 or 20/200 vision sees. Emerson's vision at this point is about 20/300 - 20/400 and Fionn is around 20/100 - 20/200.