What Is Visual-Snow Syndrome?

The accused killer of four University of Idaho students, Bryan Kohberger, revealed he has visual snow syndrome in a social media post from when he was 17 years old. The post states "it is as if the ringing in my ears and the fuzz in my vision is simply all of the demons in my head mocking me." According to an expert, visual snow syndrome is a perception where people see static in their vision. The rare neurological condition also causes tinnitus, a constant ringing in the ears.