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角膜在正常状态下是透明的。当其水化作用失调时即发生水肿,影响视力。几十年来一般认为角膜普遍性水肿最常与其内皮的功能障碍有关,而其上皮损害所致的肿胀则少得多。手术后水肿的原因白内障手术后,一定程度的角膜水肿,在后弹力膜区有线条,可视为一种正常现象,通常于数日或数周内消失。持续性或复发性水肿不常见但为降低视力的严重并发症,多为下列某一或某些结合因素、损伤内皮所致:(1)以前存在的内皮营养不良;(2)手术中外伤;(3)玻璃状体与角膜接
The cornea is transparent under normal conditions. Edema occurs when the hydration disorder occurs, affecting vision. Decades of corneal edema are generally believed to be associated with dysfunction of the endothelium for decades and much less with epithelial lesions. Causes of Post-Operation Edema After cataract surgery, a certain degree of corneal edema, with lines in the posterior elastic membrane area, may be considered a normal phenomenon and usually disappears in days or weeks. Persistent or recurrent edema is not common, but to reduce the serious complications of visual acuity, mostly due to one or more of the following combination of factors that damage the endothelium: (1) preexisting endothelial dystrophy; (2) surgical trauma; (3) vitreous and corneal access