Double eyelid: Eyelids with a noticeable arch-shaped

Eyelids with a noticeable arch-shaped crease on the upper eyelid are called double eyelids, while eyelids without this crease are monolids. It is a normal variation of human appearance, and your chance of having double eyelids is primarily based on genetics. Double eyelids are eyelids that have a crease or fold, while monolids are eyelids that don't. Learn about the difference, the history and the popularity of double eyelid surgery around the world. Different double eyelids possess their own unique appearance. The different kinds of double eyelids depend on the crease form and depth together with its symmetry aspect. Here are the main types: The crease from inside the eye widens in an outward direction as it extends toward the outside. Double eyelids and monolids, or single lids, are two different shapes of the eyelid. When, though, is surgery to change your eyelid shape necessary?