Reminder that it is INAPPROPRIATE to say someone can't/can see or hear "perfectly." Instead, try saying that they can't/can see or hear "fully."

Using the former verbiage implies that members of the Blind and Deaf community are "imperfect" and therefore cannot serve as valuable, functioning members of society. This cannot be farther from the case. They are not "lacking", they simply perceive the world differently, and therefore we should treat them as such - human beings just like us, who just take in the world a different way. With decency and respect.