What can cause a blood vessel to burst in eye?

Several things. High blood pressure and trauma are among the more common causes of a burst blood vessel in the eye. This can be brought on by something as benign as a sneeze or a cough although heavy lifting and vomiting can also play a role. Chronic high blood pressure can predispose you to this as can blood-thinning medications such as Aspirin and Coumadin (warfarin) and certain herbal supplements such as ginkgo.
Strain or cough. But often will occur for no known reason. Also sometimes caused by blood thinners.

Related Questions

Is blood vessel burst in eye generally caused by poor circulation?

Not really. Burst blood vessels on the eye surface can be caused by a sudden elevation of blood pressure or fragile blood vessels. Most commonly, a burst vessel is a chance occurence that does not recur. If it does more than once per year, have it evaluated by an eye doctor. Read more...
Blood vessel where? If on the white of the eye then it does not necessarily indicate a vascular problem. If in the retina as in a vein occlusion then it certainly can. Read more...

Can I still exercise if I burst a blood vessel in my eye doing it?

Yes, gently. If you are taking blood thinner medication and are getting frequent blood- shot eyes and black and blue marks on your body, be sure to inform your physician. Gentle exersize (not high impact or strenuous weight lifting) is usually possible. Read more...

Blood vessel burst in eye?

It's OK. You can have a capillary burst in the lining of the eye causing a red splotch that can be pretty dramatic. As long as the blood does not cross over the colored part of the eye (iris) it is not dangerous and will go away on its own within a week or so. If you have pain, decreased vision or the blood crosses over the iris, then see the ER. Read more...
More information. need more information here :) which part of the eye are you talking about? Read more...

Blood vessel burst in my eye leaving it very red?

Yes.this is a bruise. that will resolve over the next two weeks called a sub-conjunctival hemorrhage.Looks terrible but is harmless.if not slowly resolving over next 2 wks,have a professional take a look. Read more...