cross-posted from: https://feddit.org/post/4988536
The most obvious answer is Geordi La Forge, but I am sure there are more
And I cannot remember a specific example of this, but I seem to remember it being implied at some point that Starfleet is also full of invisible disabilities. That future assistive devices are just so efficient and inconspicuous that you usually can't even tell when someone has lost their natural sense of hearing or something because they are able to conduct their job normally thanks to a tiny implant. Geordi just has his VISOR because the writers gave this main character a significant disability to drive the plot and sell toys/props.