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von Graefe 1957年首次描述低眼压性青光眼(LTG),目前,关于它是否为一独立的病种以及它与原发性开角型青光眼(POAG)的关系尚有争议,同时,还没有一个能够概括临床和发病学两个方面的简明的定义。目前流行的定义仅限于描述性定义,其标准是:1)单眼或双限的后天获得性POAG样视野改变;2)单眼或双眼的后天获得性POAG样视盘改变;3)双眼未经处理时的自然眼压在统计学正常范围内;4)双眼开房角。一般选择21—24mmHg为正常眼压上限。上限眼压值增高使LTG的范围加大,也可能包括更多的交叉重迭的POAG病例。作者以24mmHg作为正常眼压上限,并以有无进行性视野缺损进行再分类。
von Graefe first described hypotonic glaucoma (LTG) in 1957. At present, there is controversy over whether it is an independent disease and its relationship to primary open-angle glaucoma (POAG), and at the same time, none Can be summarized in clinical and epidemiological two aspects of the concise definition. The prevailing definition is limited to descriptive definitions, with the following criteria: 1) monocular or dual-cap acquired POAG-like visual field changes; 2) monocular or binocular acquired acquired POAG-like optic disc changes; 3) The natural intraocular pressure in the normal range of statistics; 4) Eyes open room angle. The general choice of 21-24mmHg for the normal intraocular pressure ceiling. The upper limit of intraocular pressure increases LTG range, may also include more overlapping POAG cases. The author with 24mmHg as the normal intraocular pressure ceiling, and with or without progressive visual field defects were reclassified.