Mechanically being blind does not work for roleplay, as it prevents you from seeing dialogue outside of the visible range for the player.
I recommend for anyone wanting to play a blind, deaf, or nonverbal character, to do research on how to portray it, so you're not just using gimmicks to basically remove any difficulty.
For my deaf character, who can lip read, I make sure the emote focusing on others' speaking and movements, to be aware of their range of vision and what they can respond to, as well. This is also reflected sometimes in their speaking, as certain spoken mannerisms are simply not present for them. They are very jumpy and rarely will relax when alone, as when you're in a dangerous area and can't hear, things can happen without warning. (For example, think of if you are deaf and sleeping, and can't hear the fire alarm in your house)
For my blind character, I tried using -blind, but faced the above issue. I ended up having them memorize certain pathways of the city, either using their familiar for unfamiliar areas, or having a guide. Then they would stick perfectly to that area, counting steps and using memory, sound, texture of the floor, even smell, to navigate. I always would have them respond to anything heard in emotes or dialogue, but never spoken. And for this character, as well as my deaf one, they had a certain level of vulnerability that came from lack of awareness, which was always important to be aware of.
For my nonverbal character, who was magically bound to not speak, I started as a drow. They would keep to certain things in sign language, but I used frequent emoting otherwise, to mime things, make expressions, gesture, etc. It took a lot more effort, but I never found anyone unwilling to wait for me to finish playing charades to get a point across. I honestly really dislike seeing people who play a nonverbal character and then emote: [scribbles on a paper What do you mean?] It seems like a cop-out for simply the aesthetic of playing nonverbal, that is functionally no different. Nor do those people often take into account things like difficulty of writing in battle, who is aware of things, etc. I personally kept a notebook with a ton of different phrases written into the titles of papers. When I needed to use them, I'd open the barter screen and show the person. The rest of the time, I'd stick to miming, as a lot can be communicated that way.
Of course, all of the above are my personal take on specific types of disability to actually make these traits mean something to how the character acts and is portrayed. There are many ways to do it, but at the very least, it's nice to have some bare minimum research into it.
