Көздің алдыңғы камерасында қан кету

Hemorrhage in the front chamber of the eye

Hyphema is the medical condition of bleeding in the anterior chamber of the eye between the iris and the cornea. People usually first notice a loss or decrease in vision. Additional causes of spontaneous hyphema 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 hyphema. Source of bleeding in hyphema with blunt trauma to eye is circulus iridis major artery.

The main goals of treatment are to decrease the risk of re bleeding within the eye, corneal blood staining, and atrophy of the optic nerve. Small hyphemas can usually be treated on an outpatient basis. There is little evidence that most of the commonly used treatments for hyphema (antifibrinolytic agents [oral and systemic aminocaproic acid, tranexamic acid, and aminomethylbenzoic acid], corticosteroids [systemic and topical], cycloplegics, miotics, aspirin, conjugated estrogens, traditional Chinese medicine, monocular versus bilateral patching, elevation of the head, and bed rest) are effective at improving visual acuity after two weeks. Sedation is not usually necessary for patients with hyphema. Aminocaproic or tranexamic acids are often prescribed for hyphema on the basis that they reduce the risk of rebleeding by inhibiting the conversion of plasminogen to plasmin, and thereby keeping clots stable. However, the evidence for their effectiveness is limited and aminocaproic acid may actually cause hyphemas to take longer to clear.

Hyphemas require urgent assessment by an optometrist or ophthalmologist as they may result in permanent visual impairment. A long standing hyphema may result in hemosiderosis and heterochromia. Blood accumulation may also cause an elevation of the intraocular pressure. On average, the increased pressure in the eye remains for six days before dropping. Most uncomplicated hyphemas resolve within 5–6 days.

As of 2012, the rate of hyphemas in the United States are about 20 cases per 100,000 people annually. The majority of people with a traumatic hyphema are children and young adults. 60% of traumatic hyphemas are sports related, and there are more cases in males compared to females.