I was surprised to find that nowadays blind doesn't necessarily mean actually blind, but it doesn't. I only found that out when an optician told me my natural eyesight would be classified as "functionally blind". I'm not convinced that's what the word should mean, but that's how it's used so from a descriptivist point of view that's what it means. I wouldn't say that my natural eyesight is functionally blind. I can see blurred shapes well enough to interact with objects if I'm close enough to touch them and they're large enough. If I stick my face close enough, I can see smaller objects well enough to interact with them. So, for example, I can see well enough to make a cup of tea from sight. To me, that's not blindness. Not actual blindness. I think it would be better to have some different words to describe eyesight between normal and none.