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外伤性前房出血,多见于眼球挫伤、穿孔伤以及青光眼、白内障术后,尤以眼球钝挫伤最为常见,占所有前房出血病例的70％以上。病人以男性青少年居多,一般单眼发生。受伤原因有弹弓、掷投物、大小球类、拳、肘等的击伤。眼球受钝力打击后,虹膜睫状体在外力和眼内压的夹击下,受力集中、大小血管可发生麻痹性扩张,组织可发生水肿、撕裂、移位、坏死和出血;若虹膜根部离断或伤及大血管,会导致大
Traumatic hyphema, more common in the eye contusion, perforation injury and glaucoma, cataract surgery, especially the most common eye contusion, accounting for more than 70% of all cases of anterior chamber bleeding. Patients are mostly male teens, the general occurrence of monocular. Wounded due to slingshots, throwing throws, big and small balls, punches, elbows and other injuries. Eye by blunt force hit, the iris ciliary body in the external force and intraocular pressure of the attack, the concentration of force, the size of blood vessels paralytic expansion may occur, the organization may edema, tearing, displacement, necrosis and bleeding; if the iris Roots break or hurt the blood vessels, will lead to large