idiom · To be unable to see one's own faults or fail to recognize one's own shortcomings.

他经常挑剔同伴的不足，对自己身上的缺点却是目不见睫。

idiom · To fail to perceive what is right in front of one's eyes or truths that are extremely close at hand, just as the eye cannot see its own lashes.

我们若只顾着分析远方的局势，却对身边的危机目不见睫，那就太危险了。