A fresh pair of eyes is somebody new looking at a problem you have stared at too long. Get a fresh pair of eyes on it.
It works because familiarity hides mistakes, which is why nobody can proofread their own writing. A fresh pair of eyes needs no more skill than yours, only less exposure.
1phrasea fresh pair of eyesSomebody new looking at a problem you have stared at too long.
“A fresh pair of eyes found the error in about a minute.”
a fresh pair of eyes is a phrase.
Practised in Idioms