Re: what causes eye blood vessels breaking?
I had this in November and went to the doctor. He said it should go away in 14 days. When it didn't, I went back and he ran a ton of blood tests to see if I had some kind of other problem (hypertension, liver problems,diabetes,etc) that would cause this. $119 later (my portion of the bill), the tests all came back normal, so the next step was a biopsy of my eye. I said no way. After two months it went slowly away on its own.
I do not remember rubbing my eye, but don't worry about it if it lasts awhile. My doctor said that 90% of the time they have no idea what caused it.