The eye is divided into a small front (anterior) segment, in front of the lens, and a large rear (posterior) segment, behind the lens. The anterior chamber is the light gray area at the top of this illustration.<unk> s are frequently caused by injury, and may partially or completely block vision. The most common causes of<unk>  are intraocular surgery, blunt trauma, and lacerating trauma.<unk> s may also occur spontaneously, without any inciting trauma. Spontaneous<unk> s are usually caused by the abnormal growth of blood vessels (neovascularization), tumors of the eye (retinoblastoma or iris melanoma), uveitis, or vascular anomalies (juvenile xanthogranuloma). Additional causes of spontaneous<unk>  include: rubeosis iridis, myotonic dystrophy, leukemia, hemophilia, and von Willebrand disease. Conditions or medications that cause thinning of the blood, such as aspirin, warfarin, or drinking alcohol may also cause<unk> . Source of bleeding in<unk>  with blunt trauma to eye is circulus iridis major artery.
Hyphema
Alertness
Hypotension
Cornea
Apnea
Generalized hypoxia
Bradycardia
Hypothermia