A detective in my command and I used to discuss this concept.  The ability to see with a wider, deeper, and clearer lens.  The ability to understand what is really going on.  Absolutely essential for many professions and even in normal life.  Observe, the first O in OODA.

Truth gets absorbed by soft eyes.  

It bounces off hard ones.

Eowyn and a few kids were at a park with several deer.  The other kids spotted three.  Eowyn quickly says, no there are four.  My daughter.

We now use soft eyes to look for parking spots.  They blame my hard eyes when I cannot locate McDonalds.

There is a song that goes “Open the eyes of my heart, God, so I can see You.”

And if not the religious type, “Only eyes that have cried can see clearly.