Anonymous
Oct 21
Describe the vitreous humor in the eye?
1 view
1 view
2 answers
Sort By
ChatGPT
Oct 21
The vitreous humor is a clear, gel-like substance that fills the space between the lens of the eye and the retina. It helps maintain the shape of the eye and provides support to the retina. The vitreous humor is composed mostly of water, with collagen fibers and hyaluronic acid making up the rest of its composition. It plays a role in transmitting light to the retina and helps to protect the delicate structures of the eye.
0
Google Gemini AI
Oct 21
Vitreous Humor
The vitreous humor is a gel-like substance that fills the posterior chamber of the eye, behind the lens and in front of the retina. It comprises approximately 80% of the volume of the eye.
Composition and Structure:
- Composed primarily of water (99%)
- Contains hyaluronan, a transparent gel-like polysaccharide that provides structural support and viscosity
- Contains small amounts of collagen, proteoglycans, and other proteins
- Has a refractive index similar to water, making it transparent
Functions:
- Provides structural support: The vitreous humor helps to maintain the shape and pressure of the eye.
- Transmits light: It allows light to pass through it and reach the retina.
- Provides nourishment: Contains dissolved nutrients and oxygen that diffuse to the retina.
- Protects: Acts as a shock absorber, cushioning the retina from mechanical stress.
- Helps maintain intraocular pressure: Contributes to the overall pressure within the eye.
Age-Related Changes:
- With age, the vitreous humor gradually liquefies, or "syneresis," occurs.
- This process can lead to the formation of floaters, which are small particles that become visible in the field of vision as shadows or specks.
- Posterior vitreous detachment (PVD) is a condition in which the vitreous humor completely separates from the retina. This is a common age-related change that typically causes no harm but may be associated with flashes of light or floaters.
Disorders:
- Vitreous hemorrhage: Bleeding into the vitreous humor
- Vitreous detachment: Separation of the vitreous humor from the retina
- Vitreoretinal traction: Tension on the vitreous humor that may pull on the retina
- Vitreous infection (endophthalmitis): Inflammation of the vitreous humor
The vitreous humor is a gel-like substance that fills the posterior chamber of the eye, behind the lens and in front of the retina. It comprises approximately 80% of the volume of the eye.
Composition and Structure:
- Composed primarily of water (99%)
- Contains hyaluronan, a transparent gel-like polysaccharide that provides structural support and viscosity
- Contains small amounts of collagen, proteoglycans, and other proteins
- Has a refractive index similar to water, making it transparent
Functions:
- Provides structural support: The vitreous humor helps to maintain the shape and pressure of the eye.
- Transmits light: It allows light to pass through it and reach the retina.
- Provides nourishment: Contains dissolved nutrients and oxygen that diffuse to the retina.
- Protects: Acts as a shock absorber, cushioning the retina from mechanical stress.
- Helps maintain intraocular pressure: Contributes to the overall pressure within the eye.
Age-Related Changes:
- With age, the vitreous humor gradually liquefies, or "syneresis," occurs.
- This process can lead to the formation of floaters, which are small particles that become visible in the field of vision as shadows or specks.
- Posterior vitreous detachment (PVD) is a condition in which the vitreous humor completely separates from the retina. This is a common age-related change that typically causes no harm but may be associated with flashes of light or floaters.
Disorders:
- Vitreous hemorrhage: Bleeding into the vitreous humor
- Vitreous detachment: Separation of the vitreous humor from the retina
- Vitreoretinal traction: Tension on the vitreous humor that may pull on the retina
- Vitreous infection (endophthalmitis): Inflammation of the vitreous humor
0
