The tunica vasculosa lentis is an extensive capillary network, spreading over the posterior and lateral surfaces of the lens of the eye. It disappears normally shortly after birth, through apoptosis.[1]
The structure was not studied properly and in detail until the 1960s, when new technologies developed to allow the preservation of the networks in fetuses.[2] The scanning electron microscope finally enabled researchers to see the network even in very small laboratory animals such as the mouse embryo.[3]