acne
"I was on accutane for almost 2 months.  About a month and a half in, my eyes started to bother me. They were incredibly dry and it constantly felt like I had an eyelash in them. They were burning like crazy and hurt to move. I was worried I had an infection, so I went to my eye doctor. They told me both of my optic nerves were swollen and referred me to a neuro opthamologist. I was immediately taken off accutane. It has been a couple weeks since I stopped the medication and my eyes have finally stopped bothering me. If I had continued the medication, I could've had permanent eye damage. The scariest side effects may be rare, and this drug may be a "holy grail" for stubborn acne, but is clear skin really worth going blind, etc?"