8 角膜的構造可分為五層,其由眼外到內的順序為:①表皮層(epithelial layer) ②鮑曼氏層(Bowman’s layer) ③德式密氏膜(Descemet’s membrane) ④內皮細胞層(endothelial layer) ⑤基質層(stromal layer) (A)①②③⑤④ (B)①②⑤③④ (C)①③⑤②④ (D)①⑤③②④