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Cause of Under-Eye Fat? Read Dr. Jang Wook’s <Key Summary> First!

Objet Plastic Surgery · 오브제성형외과의원 · January 26, 2026

Cause of under-eye fat? Dr. Jang Wook’s <Key Summary> Read this first! ​ ​ ​ ​ ​ Hello. This is Obje Plastic Surgery. ​ ​ If you are reading this article, while looking in the mirr...

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This page is an English translation of a Korean Naver Blog archive entry. For exact wording and source context, verify against the Korean archive original and the original Naver post.

Clinic: Objet Plastic Surgery

Original post date: January 26, 2026

Translated at: April 23, 2026 at 1:48 AM

Medical note: This translation does not guarantee medical accuracy or suitability for treatment decisions.

Cause of under-eye fat?

Dr. Jang Wook’s <Key Summary>

Read this first!

Cause of Under-Eye Fat? Read Dr. Jang Wook’s <Key Summary> First! image 1

Hello.

This is Obje Plastic Surgery.

If you are reading this article,

while looking in the mirror,

you probably noticed that the area under your eyes

feels different from before.

It may have started to seem

slightly puffy and protruding,

and you may also hear comments

that you look tired more often.

So you likely started searching,

but when you actually look it up,

all you find are complicated medical terms

and long explanations.

Because it still doesn’t make much sense,

after all that, you’re probably left only with the question:

“So why does my under-eye area

look like this?”

Today, we prepared this for people like you.

We’ll break down only the key points

about why the under-eye area becomes puffy and protrudes.

If you read to the end,

you’ll be able to clearly understand

why under-eye fat forms,

and why it becomes more noticeable

over time.

Cause of Under-Eye Fat? Read Dr. Jang Wook’s <Key Summary> First! image 2

Under-eye fat,

actually having it is ‘normal’

First, there is something you should know.

Under-eye fat did not suddenly appear;

it was there from the beginning.

To be exact,

it is called ‘orbital fat.’

This fat is spread across the floor of the orbital cavity,

the space where the eyeball sits,

which is made of bone.

Cause of Under-Eye Fat? Read Dr. Jang Wook’s <Key Summary> First! image 3

“Then why is there fat there?”

The reason is simple.

If the eyeball were just resting

on a hard bone surface,

that would be very uncomfortable.

Just like we feel much more comfortable

lying on a soft bed than on a hard floor.

So our body has placed a soft cushion there

to protect the eyeball.

So under-eye fat itself

is not a problem.

Rather, it is essential.

The problem starts when this fat

moves out of place

and is pushed forward.

You mean it’s not from gaining weight?

The real ‘cause of under-eye fat’ revealed!

Then here comes the key question.

“Why does fat that was originally in place

suddenly move forward?”

The cause of under-eye fat

can be explained mainly by two factors.

The first is

the ‘weight of the eyeball.’

As we live our lives,

the eyeball continuously presses

down on the fat below it.

Not for just a day or two,

but for decades.

Then what happens?

The pressed fat gets pushed

toward the space where there is room.

But there is nowhere to go behind the eye.

That’s because the back side

is blocked by hard bone.

Cause of Under-Eye Fat? Read Dr. Jang Wook’s <Key Summary> First! image 4

So naturally,

it gets pushed toward the front,

the only open space available.

But at this point,

you may have a question.

“So does the fat just bulge out?”

That’s right.

That’s why our body has a safety mechanism.

It is a structure called the ‘orbital septum.’

This is a relatively tough membrane

that helps keep the fat

from protruding forward.

The problem develops over time.

As the orbital fat repeatedly

presses against and releases the orbital septum,

even a tough membrane

will gradually begin to loosen.

Cause of Under-Eye Fat? Read Dr. Jang Wook’s <Key Summary> First! image 5

Eventually, the orbital septum stretches,

and can no longer prevent the fat

from being pushed forward.

That is the second cause

of under-eye fat.

But why does it protrude

in a ‘rounded’ shape?

If you’ve read this far,

you may be thinking:

“Then shouldn’t the entire under-eye area

bulge out evenly?”

But in reality,

only certain areas protrude

in a rounded, puffy way.

This can also be explained

once you understand the cause of under-eye fat.

Cause of Under-Eye Fat? Read Dr. Jang Wook’s <Key Summary> First! image 6

The bone under our eyes

is not completely flat.

It has a slightly curved shape.

And the orbital septum

is firmly attached to this bone.

So when the fat tries to move forward,

the parts attached to the bone remain fixed,

and the fat only pushes out

through the space in between.

Cause of Under-Eye Fat? Read Dr. Jang Wook’s <Key Summary> First! image 7

That’s why it does not come out

in a straight line;

instead, it protrudes in a rounded shape.

It’s similar to when you press a balloon

with your finger,

causing the area around the pressed part

to bulge outward.

Today, we talked in an easy-to-understand way

about the cause of under-eye fat.

To summarize:

The weight of the eyeball presses the fat forward

over decades,

and as the orbital septum loosens,

it can no longer hold the fat in place,

causing the under-eye area to protrude.

At that point,

the bone structure makes it appear

as a rounded bulge.

Is it a little clearer now?

If you are worried about under-eye fat,

carefully consult with several places,

but please keep these two points in mind.

How the fat is handled,

and how the orbital septum is managed.

Dr. Jang Wook of Obje Plastic Surgery

addresses both of these causes

when performing under-eye fat repositioning surgery.

Cause of Under-Eye Fat? Read Dr. Jang Wook’s <Key Summary> First! image 8

The protruded fat is

repositioned back to where it belongs,

and the loosened orbital septum

is tightened again and secured.

Now that you understand the cause accurately,

I think you can also understand

why surgery needs to be performed that way.

As much as you have thought carefully about it,

I hope you achieve results you won’t regret.

This has been Obje Plastic Surgery.

Thank you.

<🔽🔽A video you may find helpful🔽🔽>

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  • This post is medical information written by Obje Plastic Surgery Clinic in compliance with the Medical Advertising Act.

  • Treatment effects may vary from person to person, and side effects may occur.

We recommend that you fully consult with medical staff in advance before deciding on any procedure.

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