Many characteristics of children are inherited from their parents, such as blood type, intelligence, height, and appearance. Among the facial features of children, double eyelids are the most easily inherited. However, many parents with double eyelids find that their baby has single eyelids after birth. So, at what age can a child see double eyelids?
The vast majority of children do not show double eyelids at birth. It usually takes several months or even years to identify double eyelids. The time it takes for children to develop double eyelids varies. Some babies may have complete double eyelids before the age of three, but some children only gradually show their double eyelids after going to school. Children's pupils, eyelids, and eye shape usually take shape at the age of seven or eight.
If one or both parents of a child have double eyelids, the chances of the baby having double eyelids are very high, and only a very small number of cases will have single eyelids. Double eyelids belong to dominant inheritance. If both parents have double eyelids, they don't have to worry about their child having single eyelids, but it may appear later.
The biological perspective is that single eyelids are recessive inheritance, but double eyelids are definitely dominant inheritance, so double eyelids are more easily inherited. If both parents have single eyelids, the likelihood of the child developing double eyelids is very low.
