A.合理的采光 B.提高亮度對(duì)比度、清晰度 C.閱讀時(shí)的坐姿對(duì)預(yù)防近視無(wú)關(guān)緊要 D.適當(dāng)?shù)目唇鼤r(shí)間 E.適當(dāng)?shù)拈喿x距離及良好的閱讀習(xí)慣
A.凸透鏡; B.凹透鏡; C.柱鏡; D.棱鏡; E.三面鏡