Actually eyes are part of the Central Nervous System. No other part of the CNS is exposed to the outside, to others. Perhaps that is part of the reason that the old English saying, “Eyes are windows to the soul” came into being. There are also all the muscles around the eyes and in the face that are involved in facial expression.
There is also the expression that, “the eyes do not lie.”
Paralyzing muscles with neurotoxins in the name of “beauty,” as Botox does, must hide part of a person's soul when it denies the ability of muscles to act in outward expression of inner feelings.
Pictures like this one, above, show the crinkled outer corners of a man's eyes and the “laugh lines” that are exacerbated with smiling. This part of the face knows no socio-economic status, if you are a man. Happy eyes are happy, but women are not supposed to have laugh lines or crows feet.