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A subconjunctival hemorrhage can often occur without any obvious cause or harm to the eye. A strong enough sneeze or cough can cause a blood vessel in the eye to burst. Hyphema is a result of blunt or penetrating trauma to the orbit that increases intraocular pressure, causing tears in the vessels of the ciliary body and iris.
Subconjunctival bleeding, also known as subconjunctival hemorrhage or subconjunctival haemorrhage, is bleeding from a small blood vessel over the whites of the eye. It results in a red spot in the white of the eye. [1] There is generally little to no pain and vision is not affected. [2] [3] Generally only one eye is affected. [2]
A petechia (/ p ɪ ˈ t iː k i ə /; [1] pl.: petechiae) is a small red or purple spot (≤4 mm in diameter) that can appear on the skin, conjunctiva, retina, and mucous membranes which is caused by haemorrhage of capillaries.
A microhyphema, where red blood cells are hanging in the anterior chamber of the eye, is less severe. A layered hyphema when fresh blood is seen lower in the anterior chamber is moderately severe. A full hyphema (total hyphema), when blood fills up the chamber completely, is the most severe. [1]
Blood vessels of the eyelids, front view. 1, supraorbital artery and supraorbital vein; 2, nasal artery; 3, angular artery, the terminal branch of 4, the facial artery; 5, suborbital artery; 6, anterior branch of the superficial temporal artery; 6’, malar branch of the transverse artery of the face; 7, lacrimal artery; 8, superior palpebral ...
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Laser surgery is a treatment option which uses a laser beam to seal off damaged blood vessels in the retina. [9] Anti-vascular endothelial growth factor (VEGF) drugs like Avastin and Lucentis have also been shown to repair retinal hemorrhaging in diabetic patients and patients with hemorrhages associated with new vessel growth.
The central retinal vein (retinal vein) is a vein that drains the retina of the eye.It travels backwards through the centre of the optic nerve accompanied by the central retinal artery before exiting the optic nerve together with the central retinal artery to drain into either the superior ophthalmic vein or the cavernous sinus.