Abnormality iris morphology Iris flocculi 2017-04-24T15:46:20Z Iris flocculi cause little, if any, visual impairment in most cases. However, they are occasionally associated with dissecting aortic aneurysm due to a shared mutation in smooth muscle that affects both the iris and the aorta. Multiple cysts along the pupillary margin that appear as spherical or tear-drop-shaped pigmented lesions or wrinkled masses emerging from the pupillary border of the iris.