What causes broken blood vessels in the eye without pain?

Many. Subconjunctival hemorrhages -- older age, trauma / eye rubbing, blood thinners, very high blood pressure, severe valsalva, bleeding or clotting disorder.
Usually dry eyes. A burst blood vessel should have little to no sensation. Often times patients come to us with a red eye and little else and this is usually due to dry eyes and use of anticoagulants. If you have a burst vessel and persistent headache this can signifiy severe hypertension - get seen today.

Related Questions

What are the causes of broken blood vessels in the eye?

Many. The most common cause of a conjunctival hemorrhage is dry eye. This can be worsened by use of anticoagulants such as Aspirin or coumadin (warfarin). Rarely, the burst vessel may be due to extremely high blood pressure or clotting problem. If you have a headache or the hemorrages are recurrent, be seen soon. Read more...
Multiple. Depends on which vessels, but usually relates to vessel fragility, neovascularization (weak vessels), increased vascular pressure, trauma, bleeding or clotting problems. Read more...

Is it okay to workout with broken blood vessels in the eye?

Probably ok. If it's just a broken vessel in the white of the eye, should be no problem. This is called a conjunctival hemorhage. It could be a hint of other problems like high blood pressure or too much blood thinner. If you have other health problems or any change in vision you should see a doctor. Read more...
Probably ok. If it's just a broken vessel in the white of the eye, should be no problem. This is called a conjunctival hemorhage. It could be a hint of other problems like high blood pressure or too much blood thinner. If you have other health problems or any change in vision you should see a doctor. Read more...
Yes. This shouldn't be a problem unless the reason you had broken blood vessels was due to direct trauma of the eye which would require a physician evaluation. Read more...
It depends. Subconjunctival hemorrhages are basically a bruise. They can occur for no good reason, but can be associated with any valsalva maneuver (grunting, straining, heavy lifting, etc) which in turn raises the pressure in one's upper torso and head. If you have no bleeding disorders, no changes in vision, no other bruising on your body and non-rust colored urine, you're good to work out. Read more...
Yes. Subconjunctival hemorrhage is an ultimately harmless condition. Straining / exercise may make it look worse, but it won't cause any permanent damage to the eye. Read more...

Are there any cure for broken blood vessels on the eye?

Self limited. This condition, known as a subconjunctival hemorrhage, is usually very benign, and does not require any treatment. Usually fully resolved within 1 to 2 weeks. Read more...
Time. They resolve on their own in 1-2 weeks. No treatment is necessary. Read more...