What are Epicanthal Folds? Understand the Causes of the Disease

The word “monolid” refers to an eye that seems to have just one eyelid fold rather than two. Monolids are prevalent among persons of East Asian ancestry and have been linked to a number of illnesses and ailments, including Down syndrome.

Monolids, also known as epicanthal folds, is a section of skin on the upper eyelid that goes from the nose to the brow. It creates the illusion of a crease-free eyelid. It can accentuate and droop the eyelid in rare circumstances, giving the eye a more narrow look.

Monolids are completely natural and do not affect eyesight in and of themselves.

A monolid result from a medical disease such as Down syndrome may be associated with other vision problems.

Let’s Understand Eye Anatomy

Knowing a little about eye anatomy helps a lot when trying to decode monolids. Each of our eyes has an upper and lower set of lids. The canthus is where the upper and lower eyelids meet at the corners of the eyes. As a result, the upper eyelid seems to be divided into two portions by most people. A double lid is what you’re looking at here.

However, this isn’t something that everyone possesses. Many East Asians, particularly those of Chinese or Korean ancestry, have monolids, which are eyelids without a crease. Monolids have only one segment because they lack a crease. Nearly half of Asians are born with only one eyelid.

You can find an epicanthal fold on the faces of those who have a monolid. Eyelid creases can be minimized or eliminated with the use of this skin patch. Monolids can amplify the appearance of puffy upper eyelids or narrow the eyes.

Causes of the Epicanthal Folds

Human appearance includes a wide range of differences, including monolids. They are often inherited, although medical problems might sometimes be to blame.


A monolid is more common in people of Asian ancestry because of genes that generate an epicanthal fold. Individuals with ancestry originating from China, Korea, Mongolia, or Japan are more likely to be born with a monolid eyelid disorder. When it comes to brow creases, East Asians tend to have less than Caucasians.

Scientists are baffled as to why Asians began developing monolids so early in history. People who live in the cold, windy areas like Mongolia may have developed the monolid to keep their eyes protected. The reason Asians have a monolid is unknown, however, to scientists.

Medical Reasons

Some medical disorders can induce a monolid in persons of any race, not just Asian ancestry. These are a few examples:

  • The condition is known as Down syndrome
  • Fetal alcohol spectrum disorder (FASD)
  • The condition is known as Turner syndrome.
  • The PKU condition is a medical condition.

Blepharophimosis syndrome, characterized by a monolid, small eyes, and an epicanthal fold, is another disease to be aware of.

Wrap up

It’s normal to dislike a portion of your body. If you despise your monolid or Epicanthal Folds eyes, realize that they are perfectly natural and attractive. Traditional beauty standards and the current emphasis on Caucasian beauty standards make that difficult.

If you wish to permanently modify your eyes’ look or temporarily, weigh the physical and emotional benefits and downsides. Remember that having a monolid won’t impact your vision.

Finally, only you can determine if you want to embrace or change your eye form.