...Pathological bleeding occurs when blood is released from trauma, intraocular foreign bodies, or from new blood vessels in association with diabetic retinopathy or retinal vein occlusion. Preretinal bleeding occurs when blood pools on the surface of the retina or causes a thin, stretched condition. The cause is the same as vitreous bleeding, but it can also be a characteristic symptom of severe anemia. Bleeding in the macula can cause vision problems, but bleeding in other areas is asymptomatic. *Some of the terms that refer to "preretinal bleeding" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…病的な場合は,外傷,眼内異物などに伴って出血したり,糖尿病性網膜症,網膜静脈閉塞症に合併して新生血管が出血することによって起こる。網膜前出血preretinal bleedingは血液が網膜の表面にたまる場合や薄く伸びた状態となり,原因は硝子体出血と同様であるほか強度の貧血の場合に特徴的に現れることもある。黄斑部での出血は視力障害の原因となるが,その他の部位では自覚症状はない。… ※「preretinal bleeding」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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