Hybrid dysgenesis

Hyaloid Membrane

The Hyaloid Membrane is a thin, transparent film of tissue that envelops the vitreous body in the eye. It is a part of the visual system and plays a crucial role in the development and maintenance of the eye's structure.

Anatomy

The Hyaloid Membrane is located between the lens and the retina. It is attached to the lens by the zonule of Zinn and extends to the optic disc on the retina. The membrane is composed of two layers: the anterior hyaloid membrane and the posterior hyaloid membrane. The anterior hyaloid membrane is in contact with the vitreous body, while the posterior hyaloid membrane is in contact with the retina.

Function

The primary function of the Hyaloid Membrane is to maintain the shape and structure of the vitreous body. It also serves as a barrier, preventing the migration of cells and fluids between the vitreous body and the retina. In addition, the Hyaloid Membrane plays a role in the transport of nutrients and waste products between these two structures.

Clinical Significance

Abnormalities or damage to the Hyaloid Membrane can lead to a variety of eye conditions. For example, Posterior Vitreous Detachment (PVD) occurs when the posterior hyaloid membrane separates from the retina. This can lead to floaters, flashes of light, or even retinal detachment. Another condition, Persistent Hyperplastic Primary Vitreous (PHPV), is a congenital disorder where the hyaloid artery fails to regress, leading to a range of visual impairments.

See Also

• Vitreous body
• Retina
• Lens (anatomy)
• Visual system