The cavity of vitreous humor is found in the posterior part of the eye, specifically in the posterior cavity. Let's break down the answer to understand it in more detail.

Posterior Cavity:
The posterior cavity of the eye is located behind the lens and is filled with a gel-like substance called the vitreous humor. It is also known as the vitreous chamber or vitreous body. This cavity is bounded by the retina internally and the lens and ciliary body anteriorly.

Vitreous Humor:
The vitreous humor is a transparent, jelly-like substance that fills the posterior cavity. It helps maintain the shape of the eye, provides support to the retina, and aids in the transmission of light to the retina. The vitreous humor is composed mainly of water, collagen fibers, hyaluronic acid, and other proteins.

Functions of the Vitreous Humor:
1. Maintaining Eye Shape: The vitreous humor helps to keep the eye spherical in shape by exerting pressure on the walls of the eyeball.
2. Supporting the Retina: It provides support to the delicate retina, which is responsible for capturing light and transmitting visual information to the brain.
3. Refracting Light: The vitreous humor refracts light as it passes through the eye, helping to focus the incoming light onto the retina.
4. Nutrient Supply: It supplies nutrients and oxygen to the avascular lens and cornea.

Position of the Cavity:
The vitreous humor is contained within the posterior cavity of the eye, which is located behind the lens. It is separated from the anterior cavity (located in front of the lens) by the lens itself. The posterior cavity is also known as the vitreous chamber because it contains the vitreous humor.

In conclusion, the cavity of vitreous humor is found in the posterior cavity of the eye. It is important for maintaining the shape of the eye, supporting the retina, and aiding in the transmission of light.

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