光线从外界进入眼内,正确的途径是     A.角膜→瞳孔→晶状体

光线从外界进入眼内,正确的途径是

    A.角膜→瞳孔→晶状体→玻璃体→视网膜

    B.巩膜→脉络膜→视网膜

    C.角膜→虹膜→巩膜→玻璃体→视网膜

    D.巩膜→瞳孔→角膜→视网膜

答案

A

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