有关边缘性角膜变性的描述，错误的是

试卷相关题目

• 1带状角膜病变主要累及角膜的

  A.上皮层

  B.前弹力层

  C.基质层

  D.后弹力层

  E.内皮层

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• 2角膜老年环起初混浊在角膜的

  A.上下方

  B.鼻侧

  C.颞侧

  D.鼻侧+颞侧

  E.中央

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• 3Fuchs corneal dystrophy is marked by all of the following except

  A.Epithelial edema

  B.Subepithelial fibrosis

  C.Stromal inflammation

  D.Thickening of the posterior banded layer of Descemet membrane

  E.Endothelial pleomorphism and polymegathism

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• 4What percentage of scrapings yields positive cultures in Acanthamoeba keratitis

  A.Less than 10%

  B.10% to 20%

  C.20% to 30%

  D.40% to 50%

  E.65% or more

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• 5Which is the best smear for diagnosing Acanthamoeba keratitis

  A.Calcofluor white

  B.Giemsa

  C.Gomori Methenamine Silver

  D.Gram

  E.Papanicolau

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