Happy Valentine's Day!
I was recently asked by the husband of a patient, "what is the purpose of the Iris (the colored part of the eye?" Our Chief quickly answered "Think how many love songs wouldn't have been written without them." He's right! Brown Eyed Girl, and the host of songs about getting lost in those "baby blues". If you didn't have an iris then Elton John's lyric would have been "Black Pupils, My baby has black pupils". Just doesn't give the warm and fuzzy feeling.
The real reason is the pupil is like the hole of a donut. It requires the iris to control the expansion and contraction of the muscle which allows light into the back of the eye. As for the color, that is simply pigmentation.
Give someone a hug today and look deeply into their eyes, even it is just the family pet :-) they need love too.
A young woman was taking an afternoon nap. After she woke up, she told her husband, "I just dreamed that you gave me a pearl necklace for Valentine's day. What do you think it means?"
"You'll know tonight," he said.
That evening, the man came home with a small package and gave it to his wife. Delighted, she opened it--only to find a book entitled "The meaning of dreams".