Whether the eye or the smile, it is what you feel when you see it at that instant.
When we look at the person, a smile will melt our heart as it is a gesture of warm and loving look on that person. Having a beautiful eyes that look through you will give the burning desire of love. So, if that person is the one that you love, then seeing both the beautiful smile and eyes will definitely make you feel that you are on top of the world.
Love will begin to fill the air and you will be riding the cloud. That is what my wife will do for me every morning when we wake up.
It is always great to have that lovely feeling daily.