science

Meh...

Schizophrenia is really fucking hard to diagnose, someone whose never been able to see, can't experience visual hallucinations, they just can't. And that's the main symptom, the one that people not only experience but can usually eventually figure out aren't real.

They can experience auditory hallucinations, but are likely to have not only an inner monologue, but a richer one with more variation due to no vision. Creating narratives even subconsciously would help navigate figuratively and literally. With relaying on hearing so much, "false positives" would also likely be common, a study on how often blind people think they may have heard something may shed light. "Did someone say something" moments may mask auditory hallucinations.

It's entirely possible there's blind schizophrenics, and they're either misdiagnosed or undiagnosed.

One thing that is weird, people born deaf also can't experience auditory hallucinations, so instead they experience "floating hands" visual hallucinations that angrily sign at them.

So I'd be curious into research if schizophrenia in someone whose never experienced sight is exhibited in a radically different way. The symptoms are still just symptoms, they're not what's causing the issue. So it would make sense when such fundamental systems as vision and hearing are interrupted, symptoms may manifest in radically different ways, or even unnoticeable ways