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Aqueous Humor vs. Vitreous Humor: What's the Difference?

Edited by Aimie Carlson || By Harlon Moss || Updated on October 27, 2023
Aqueous humor is a clear fluid in the front part of the eye, while vitreous humor is a clear, jelly-like substance in the back part of the eye.

Key Differences

Aqueous humor is a clear liquid located in the anterior chamber of the eye, which is the space between the cornea and the lens. Vitreous humor, on the other hand, is a clear, gel-like substance found in the larger, posterior chamber, between the lens and the retina. Both play vital roles in maintaining the eye's shape and refractive properties.
Aqueous humor is continuously produced by the ciliary body, a part of the eye located behind the iris. It nourishes the cornea and lens by supplying nutrients and carrying away waste products. Vitreous humor is more stable in composition and is not regularly replaced. It helps to keep the retina in place and maintains the shape of the posterior segment of the eye.
The flow and drainage of the aqueous humor are crucial to maintaining the intraocular pressure. Imbalances in its production and drainage can lead to conditions like glaucoma. Vitreous humor, due to its gelatinous consistency, can sometimes undergo liquefaction, leading to the creation of floaters seen by the individual.
Both the aqueous and vitreous humors are transparent, ensuring that light can pass through the eye without hindrance. While the aqueous humor is in a liquid state and is constantly being renewed, the vitreous humor remains in a semi-solid state throughout life and doesn't undergo the same kind of renewal.

Comparison Chart


Front of the eye, between the cornea and lens.
Back of the eye, between the lens and retina.


Gel-like, semi-solid


Continuously produced and drained
Does not regularly renew


Nourishes cornea and lens; maintains eye pressure
Maintains eye shape; holds retina in place

Associated Risk

Imbalance can lead to glaucoma
Liquefaction can lead to floaters

Aqueous Humor and Vitreous Humor Definitions

Aqueous Humor

A transparent substance responsible for maintaining intraocular pressure.
An imbalance in the production of aqueous humor can lead to glaucoma.

Vitreous Humor

A transparent gel aiding in the eye's light transmission process.
The clarity of the vitreous humor ensures undistorted light passage to the retina.

Aqueous Humor

The fluid that supplies nutrients to the avascular parts of the eye.
Without the aqueous humor, the cornea and lens would lack essential nutrients.

Vitreous Humor

Vitreous humor is a clear, jelly-like substance found in the back of the eye.
Aging can cause changes in the consistency of the vitreous humor.

Aqueous Humor

The eye's self-renewing fluid found in the anterior chamber.
The drainage system of the eye ensures the continuous renewal of the aqueous humor.

Vitreous Humor

A gelatinous material that fills the space between the lens and the retina.
The vitreous humor plays a crucial role in maintaining the shape of the eye.

Aqueous Humor

A nourishing fluid that occupies the space between the cornea and lens.
The flow of aqueous humor ensures that nutrients reach the cornea and lens.

Vitreous Humor

The semi-solid substance helping to keep the retina attached to the eye.
Any detachment of the retina might involve the vitreous humor pulling away.

Aqueous Humor

Aqueous humor is the clear liquid filling the front part of the eye.
The ciliary body constantly produces aqueous humor, which nourishes the eye.

Vitreous Humor

The eye's stable filler that doesn't undergo regular renewal like other eye fluids.
Unlike the aqueous humor, the vitreous humor remains mostly unchanged throughout life.


Where can one find the vitreous humor?

Between the lens and the retina.

What is the aqueous humor?

A clear liquid in the front part of the eye.

Where is the aqueous humor located?

Between the cornea and the lens.

Does the aqueous humor renew itself?

Yes, it is continuously produced and drained.

What produces the aqueous humor?

The ciliary body behind the iris.

What's the function of the vitreous humor?

It maintains eye shape and holds the retina in place.

Can the production and drainage of aqueous humor be problematic?

Yes, imbalances can lead to eye diseases like glaucoma.

And the vitreous humor?

A clear, jelly-like substance in the back part of the eye.

How about the vitreous humor, does it renew?

No, it remains stable and doesn't undergo regular renewal.

Is the aqueous humor similar in consistency to the vitreous humor?

No, the aqueous is liquid, while the vitreous is gel-like.

Why doesn't the vitreous humor undergo renewal?

Its stable composition doesn't necessitate regular renewal.

Why is the aqueous humor important?

It nourishes the cornea and lens and maintains intraocular pressure.

How is intraocular pressure maintained?

By the balance of production and drainage of aqueous humor.

Are both humors vital for vision?

Absolutely, both play crucial roles in ensuring proper eye function and vision.

Can imbalances in the aqueous humor cause issues?

Yes, it can lead to conditions like glaucoma.

Is the vitreous humor always gel-like?

Mostly, but it can undergo changes with age.

Does light pass through the aqueous humor?

Yes, it is transparent allowing light to pass through.

Can light pass through the vitreous humor as well?

Yes, its transparency ensures undistorted light passage.

What happens if the vitreous humor pulls away from the retina?

It can lead to retinal detachments.

What happens if the vitreous humor undergoes liquefaction?

It can lead to floaters in one's vision.
About Author
Written by
Harlon Moss
Harlon is a seasoned quality moderator and accomplished content writer for Difference Wiki. An alumnus of the prestigious University of California, he earned his degree in Computer Science. Leveraging his academic background, Harlon brings a meticulous and informed perspective to his work, ensuring content accuracy and excellence.
Edited by
Aimie Carlson
Aimie Carlson, holding a master's degree in English literature, is a fervent English language enthusiast. She lends her writing talents to Difference Wiki, a prominent website that specializes in comparisons, offering readers insightful analyses that both captivate and inform.

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