I think that sometimes eyes can be a reliable indicator of one's intent, personality or character. do you know that one's crow's feet can tell us whether the person have interest, empathy and amusement to the person he or she is speaking with? Because if the smile extends over one's whole face and eye muscles will involved when people smile with warmth and genuine engagement. However, a manufactured smile will not engage the movement of eye muscles. So only the lower half of the face will involved. If a guy prefers a long-term relationship, he may have an open, normal gaze. Actually the wider-eyed look is more attractive for a wide-eyed appearance signifies youth. Blink rate can tell us whether the person is nervous or not. Look left or right are believed that the person is considering what to say. If the gaze of a person never wavers, you should probably suspect whether he or she is telling a lie, because uaually liars are tend to engage in more eye contact.