Some of the causes of angioid streaks are breaks or cracks in Bruch's membrane. Once choroid is involved choroidal neovascularization is likely to take place.

Causes are as follows: PXE ED syndrome Paget's disease Acromegaly old age lead poisoning SC anaemia Diabetes Mellitus High myopia S w syndrome Neurofibromatosis Haemochromatosis Spherocytosis