The pathophysiology of this process occurs because the veins above the heart have no valves. A rapid rise in the abdominal pressure induces 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.
Few suffered from severe injuries, including orbital fractures (0.9%), perforating injuries (1%) and optic nerve or choroidal rupture (0.3%). Sixty-nine patients (8%) were evaluated due to air bag injuries. Air bag injuries were mostly mild, including 47 (5.4%) corneal erosions, 33 (3.8%) hyphema, and 24 (2.8%) subconjunctival bleeding.
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.