Streaks that radiate out from the optic nerve head under the retina. The streaks may be red, brown or grey. The streaks resemble blood vessels and hence the term angioid. The streaks represent tiny breaks in the elastic membrane of the retina (Bruch's membrane). The anomaly is often associated with conditions such as Paget's disease, sickle cell anemia, Ehlers-Danlos syndrome and pseudoxanthoma elasticum. See also Angioid streaks