Despite its alarming appearance, a subconjunctival hemorrhage is usually benign and does not affect vision. Its size can vary, ranging from a tiny spot to an area covering a large portion of the white of the eye. It often resolves spontaneously, without treatment, typically within one to two weeks.
2. Why are subconjunctival hemorrhages so alarming but rarely dangerous?
The conjunctiva contains many small blood vessels that can rupture easily. When they rupture, blood becomes trapped beneath the clear conjunctiva, giving the eye its characteristic red appearance. The stark contrast with the white sclera of the eye accentuates the redness and makes it appear alarming.
However, these hemorrhages are usually painless and do not cause any lasting effects or vision problems. They resemble bruises and gradually disappear when exposed to light.
In older adults, subconjunctival hemorrhages can occur due to increased fragility of the blood vessels or following minor trauma, such as rubbing the eye or sneezing. Age-related changes in blood vessel elasticity and tissue thinning can also make older adults more vulnerable. Other triggers include sudden increases in blood pressure, lifting heavy objects, or taking certain medications that affect blood clotting.
4. When is a red spot around the eye a sign of high blood pressure or problems related to blood thinning medication?
High blood pressure can increase the risk of subconjunctival hemorrhages by putting extra pressure on blood vessels, making them more likely to rupture. A sudden rise in blood pressure, even a temporary one, can cause this type of eye bleeding.
Similarly, people taking blood thinning medication (anticoagulants) may experience these hemorrhages more frequently. Blood thinning medications can alter blood clotting, thus promoting bleeding, even in cases of minor vascular trauma.
5. Warning signs that indicate you should go to the emergency room immediately.
3. The most common triggers in people aged 60 and over
