The pathophysiology of this process occurs because the veins above the heart have no valves. A rapid rise in the abdominal pressureinduces a rapid rise in the intravenous pressure, and various vessels inside or around the eye may rupture7 . Various straining activities such as heavy lifting, coughing, vomiting, blowing balloons and straining on a stool if constipated frequently lead to subconjunctival haemorrhages.
PED was used in >180 patients in Belgium under clinical investigation. Clinical experience in the first 53 cases (mean age 55.2 years, 48 women) has been published.* Treated IAs in these 53 were in both the anterior and posterior circulation and nearly half (48%) were large or giant. A total of 72 PEDs were used, with 1 PED in 44 IAs, 2 in 17 IAs and 3 in 2 IAs.
The treatment required to use eyedrops, such as artificial tears, to soothe any scratchy feeling you have in your eye. Beyond that, the blood in your eye will absorb within about one to two weeks, and you'll need no treatment. Ongoing Research is being done at Subconjunctival hemorrhage centres.