Human: Is there any truth to the belief that you can tell how old a person is based on their eyes? Assistant: 
Yes, there is some truth to this. The shape and size of your eyes are determined by genetics, but they also change as you age. As you get older, the lens inside your eye becomes more curved, which makes it harder to focus on objects up close. This means that when you look at something far away, like a book or a TV screen, your eyes have to work harder to bring the object into focus. This causes the muscles around your eyes to become weaker and less elastic, resulting in the appearance of “crow’s feet” around the corners of your eyes.