Dude I had this awful ass headach one nite my eye had been twiching bad for a couple weeks and I had that headach I mean not a normal headach bro and a couple days later I noticed my vision was hard to focus Long story short idk how long I was blind in that eye before I realized it. Almost 8 months of doctors visits every test known to man spinal tap and all they still have zero idea what happened to me. One retnia surgeon finally said he thought I may have had an ocular stroke or a small brain stroke. Bottom line I lost blood flow to the eye and the nerves died.