Streak Health Dictionary

reddish to dark-brown irregular streaks radiating outwards from the optic disc underneath the retina. They represent irregular linear cracks in *Bruch’s membrane and can be the site for the development of new vessels from the choroid. They are seen in such systemic conditions as pseudoxanthoma elasticum, Paget’s disease, and sickle-cell anaemia.... angioid streaks

the region of the embryo that proliferates rapidly, producing mesoderm cells that spread outwards between the layers of ectoderm and endoderm.... primitive streak