@hipsterelectron I think don't think that's the reason. I think it's more like, if you frequently forget you have a disability, it is hard to think of it as a disability. Like, I don't think of my extreme nearsightedness as being a disability even though I absolutely cannot see more than a few inches in front of my face without corrective lenses. I do however see my convergence insufficiency as a disability because the severe eye strain is a literal loss of ability.