Pericorneal plexus

Pericorneal Plexus

The Pericorneal Plexus is a network of blood vessels located in the eye. It is situated in the cornea and the sclera, the white part of the eye. The pericorneal plexus plays a crucial role in the eye's vascular system, providing essential nutrients and oxygen to the cornea and sclera.

Anatomy

The pericorneal plexus is formed by the anastomosis, or connection, of the anterior ciliary arteries and the episcleral arteries. These arteries are branches of the ophthalmic artery, which is the main blood supply to the eye. The pericorneal plexus encircles the cornea, forming a ring-like structure at the junction of the cornea and sclera, known as the limbus.

Function

The primary function of the pericorneal plexus is to supply blood to the cornea and sclera. The blood vessels in the plexus transport oxygen and nutrients to these structures, which are essential for their health and function. The pericorneal plexus also plays a role in the eye's immune response, as it can transport immune cells to the cornea and sclera in response to infection or injury.

Clinical Significance

Changes in the pericorneal plexus can be indicative of various eye diseases. For example, an increase in the size or number of blood vessels in the plexus, known as corneal neovascularization, can occur in conditions such as keratitis, corneal ulcer, and dry eye syndrome. Conversely, a decrease in the size or number of blood vessels can occur in conditions such as scleritis and uveitis. Therefore, examination of the pericorneal plexus can provide valuable information in the diagnosis and management of these conditions.

See Also

• Cornea
• Sclera
• Ophthalmic artery
• Keratitis
• Corneal ulcer
• Dry eye syndrome
• Scleritis
• Uveitis