I poked myself in the far right corner of my eye when taking down my Christmas tree. It is not painful and has not affected my vision, but there is a large blood blister that is bulging slightly and, over the last 2 and a half hours, it has spread around the iris all the way to the other side of my eye. I spoke with my ophthalmologist's office, who prescribed antibiotic drops, but they didn't seem concerned. Said it sounded like I'd broken a blood vessel and it would resolve on its own. It's just very alarming looking.