Tunica vasculosa lentis

Tunica vasculosa lentis is a network of blood vessels in the eye that supplies nutrients to the developing lens. It is a temporary structure that typically disappears by the time of birth.

Structure

The tunica vasculosa lentis is a vascular network that surrounds the lens of the eye during embryonic development. It is derived from the hyaloid artery, a branch of the ophthalmic artery. The tunica vasculosa lentis forms a capillary network around the posterior surface of the lens and extends anteriorly to cover the anterior surface of the lens as well.

Function

The primary function of the tunica vasculosa lentis is to provide nutrients to the developing lens. The lens is avascular, meaning it does not have its own blood supply. Instead, it relies on the tunica vasculosa lentis for nutrient delivery and waste removal.

Clinical significance

In some cases, remnants of the tunica vasculosa lentis may persist after birth, a condition known as Persistent Hyperplastic Primary Vitreous (PHPV). This can lead to a range of visual impairments, including cataract, glaucoma, and microphthalmia.

See also

• Eye development
• Hyaloid artery
• Persistent Hyperplastic Primary Vitreous