I'm considering writing a character who develops a conversion disorder form of blindness (and maybe also deafness?). I have a conversion disorder myself - though it relates to mobility rather than anything sensory - and thought that might help me write her.
Mine happened as a result of long-term, debilitating and chronic stress levels, and after reading a few of the links in the pinned post, I feel like my experiences and the plot i had in mind helps avoid the problems with the traumatic-suddenly-I'm-blind-and-my-life-is-over trope.
Specifically (and pretty much the whole situation happens long before the story even starts, so she's very adjusted to the disability by the time we meet her) after spending her entire childhood with an abusive mother putting a Lot of strain on everyone in the household, and then another two years dealing with the court system dragging out a divorce and a major related case, and then her brother having a major health scare, she develops some form of psychogenic blindness and/or deafness.
Obviously that's scary for her, especially in the moment, but because it's a conversion disorder and also based on my experiences, that would mean that her ability to see/hear comes and goes, giving her a dynamic disability that changes based on stress/energy levels, etc.
I imagine a lot of the same advice regarding blindness would apply, but I'm curious how having blindness that comes and goes might affect some of that advice. Coming at it from the perspective of someone with a different type of conversion disorder gives me a lot of insight most other people wouldn't have, but I'm... not blind. I have visual snow syndrome that requires lighting adjustments sometimes, I'm mildly nearsighted, but I by no means consider myself truly blind, and certainly not in the way this character is probably going to be.
One thing I can probably make a good guess on is mobility issues and how often she might have to deal with getting accused of faking - because sometimes she literally can see as well as a sighted person, but if someone who only knows that she's blind/experiences blindness sees her doing something she normally wouldn't be able to do when having an episode of blindness, they might get up in arms about it. (Also something I have a bit of personal experience with and a fear i have a LOT of personal experience with thanks to my mobility issues being largely episodic and stress-induced).
Another one is the variety of types of blindness (and/or deafness) that might occur - my mobility issues stem from psychogenic versions of multiple variants of the same condition, so I'd imagine it'd be entirely possible for her to experience different types of blindness in different situations, especially at the start before things settle down when life gets calmer.
I think I'm rambling. Point is, I'm experienced with my type of conversion disorder, and I don't actually know how much of that translates to blindness (/deafness) from a conversion disorder, but I figured a good start would be to run it by an actual blind person who would, y'know, have experience with the blindness aspect of it, and someone among your followers might either have that type of conversion disorder or know someone who does, which would be even more helpful.
Also tagging at @cripplecharacters for the Deafness stuff. I’ll try to help with the blindness here, but as always, a sensitivity read through would probably be best.
While I don’t have episodic blindness, my vision can decrease when I’m stressed, anxious, or tired. Or maybe the information I get from vision is decreased. These instances, as well as low lighting when trying to use my sight instead of resting, can also lead to eye strain. I have also dealt with glaucoma episodes that took away my vision, as well as severe post-surgery photophobia. Not the same, but some experiences are still similar.
One thing that helped me was having orientation and mobility skills already. I can rely on these skills rather than on my remaining vision. I was also able to use a screen-reader confidently. Blind people with residual vision are often expected to rely on it, but it won’t always be there even if your vision is expected to remain stable. Having these skills is helpful. Learning to use them when not under stress or big vision / health changes improves a person’s ability to use them in difficult situations, like during episodic blindness.
So it would help if she had experience with a cane or human guide beforehand. Knowing how to have someone else guide you and advocating for your needs is also an important skill. She should also carry a cane if an episode happens when she is not at home.
I’m also wondering if a Hearing dog or psychiatric service dog would help? I am not 100% sure about criteria for animal guides, in that I don’t know if she would be approved for one due to possibly not using one enough (2-3 times a week, at least), but other service dogs would probably be good for her. Not that a psychiatric service dog is different from an emotional support animal. But I’m let @cripplecharacters give thoughts on this option if they have any.
Since she’s adjusted to it at the start of the story, let me get to the other questions.
Blindness and Deafness exist on spectrums, of course, so she might not be totally blind often or even ever. However, the good thing about blindness is that canes and Braille and screen-readers can be useful even for those with residual vision. For there, you can add in things like lighting adjustments, using light for orientation, and zoom technology. Braille would also be good for situations where she happens to lose a lot of sight and hearing simultaneously. But that may not always be the case.
As for people getting mad, unfortunately blind people are accused of faking all the time. That will happen regardless. People simply don’t know enough about blindness. Being able to advocate for herself and calmly explain her needs will be important. Sometimes ignoring people is better than confronting them.
Migraines might be a good example to use. People get migraines episodically. Sometimes certain situations can trigger a migraine. A migraine can have varying levels of intensity and duration. So just because a person isn’t having a migraine right now, doesn’t mean they don’t have that condition.
I don’t know going from sighted to the blindness spectrum is like, though. Let alone bouncing back and forth between them. So if anyone else has thoughts, please share them.
You can also message me if you have more specific questions as you write.