NCIt definition : A congenital abnormality of the eye caused by incomplete regression of the tunica
vasculosa lentis, which is the vascular structure that nourishes the crystalline lens
in utero.;
Alternative definition : CDISC: A congenital abnormality of the eye caused by incomplete regression of the
tunica vasculosa lentis, which is the blood supply for the developing lens of the
fetus.;