A monolid is an eyelid shape that doesn't have a crease. An eye that does have a crease is known as a double eyelid. Monolids are typically a facial feature of East Asian people. However, other races may also have a monolid or an eyelid shape without a crease.

Do Chinese have double eyelids?

However, among the Chinese, the prevalence of double eyelid on both eyes involved slightly more than two-third (70.1%) of subjects. The prevalence of double eyelid among Chinese female at 81.3% was higher than that observed for the male (59.2%).

Is it bad to have double eyelids?

Keep in mind, there's nothing medically wrong with double or single eyelids — both are entirely normal.