i can't see your eye but this may be a common subconjunctival hemorrhage. this can be caused by coughing sneezing exercising or even straining for a bowel movement. having uncontrolled high blood pressure and certain medications can be other factors but in most cases this condition is innocent -- looks worse than it actually is. if you are concerned you can see your medical provider or even eye care professional for a exam and consultation.
can high blood pressure cause broken vessels in the eye. i was fine this morning but an hour later getting to work i have a broken blood vessel in one of my eyes and it looks terrible. what cause this to happen?