When you think about locks being blown forward to cover ones eyes, you think about how difficult it is to see someone's face sometimes, how we miss the full picture. I find it interesting that he uses this analogy because we have so often heard that ones eyes are the windows to their souls. Perhaps Frost believes that our sin can keep us from experiencing the spirit of God just as someone's hair can keep us from seeing into their soul. The eyes can be a very important tool in connecting mankind, why else is eye contact so important?