Talk:Kishou Arima/@comment-31668272-20180618220010/@comment-10733658-20180908202739

^ Uh......no, Glaucoma does not cause your hair to turn grey. I'm not sure who told you that, Anon, but they were wrong.

Glaucoma is what was causing him to go blind. It's a disease that causes headaches, vision problems, and eventually blindness. The primary cause is increased blood pressure in the vessels around and inside the eyes, which damages the optic nerve over time.