如果笔尖太锋利或粘着很多铅笔渣的话会伤害你柔嫩的眼睛，或可能使眼睛接触有害细菌造成眼部感染。

Having a tip that's sharp or full of pencil fragments can tear the delicate rim of the eyes or expose you to harmful bacteria, causing a potential eye infection.

youdao

当眼睛(主要是角膜部分)接触不到水份和氧气时，细胞死亡，血管膨胀，进而引发诸如发痒和眼部充血这样的一系列症状。

When the eyes, mainly the cornea, are deprived of water and oxygen, cells die and blood vessels dilate, causing syndromes such as itchiness and bloodshot eyes.

youdao

当眼睛（主要是角膜部分）接触不到水份和氧气时，就会导致细胞死亡，血管膨胀，进而引发诸如发痒和眼部充血等一系列症状。

When the eyes, mainly the cornea, are deprived of water and oxygen, cells die and blood vessels dilate, causing syndromes such as itchiness and bloodshot eyes.

youdao