The eye is a very delicate structure and bleeding can occur in several parts, resulting from different causes, the common ones being the following: First, bleeding on the surface of the white eyeball, also known as subconjunctival hemorrhage, usually caused by rubbing the eye with the hand, minor trauma to the eye, sneezing, violent coughing, or constipation resulting in the rupture of small blood vessels on the surface of the eye, causing small flaky hemorrhages. Second, internal hemorrhage in the black eye, also known as anterior chamber hemorrhage, is usually caused by a more severe external shock to the eye or by the formation of new blood vessels in the iris. Third, vitreous cavity hemorrhage, usually caused by the rupture of a large retinal aneurysm, as well as severe retinal hemorrhage and rupture into the vitreous cavity. Fourth, retinal hemorrhage, usually caused by diabetic retinopathy, hypertensive retinopathy, retinal vein embolism, and retinal neovascularization.