crow’s feet

Crow's feet are wrinkles that extend from the outer corners of the eyes. These wrinkles are a common sign of facial skin aging. The aging process in the skin involves a gradual loss of elasticity due to changes in proteins like elastin and collagen.123

Factors such as exposure to weather, particularly the sun's ultraviolet radiation, significantly contribute to skin aging and the formation of wrinkles. While the skin's ability to regain its shape is due to elastin and collagen fibers, these degrade over time. The contraction of facial muscles, like the orbicularis oculi, also contributes to the formation of these lines over time.234