A<unk>  is a hamartoma (a type of benign tumor) affecting the iris.  These<unk> s are typically found in neurofibromatosis type 1. They are clear yellow to brown, dome-shaped elevations that project from the surface of the iris.<unk> s are theorized to arise from mast cells, pigmented cells and fibroblast-like cells.  In 80% of eyes,<unk> s may be found in the inferior quadrants of the iris and this may be related to greater sun exposure, one of the postulated factors in the development of these benign tumefactions. They can be detected by an optometrist or an ophthalmologist using a slit lamp. These<unk> s do not affect vision.  They were named after Austrian ophthalmologist Karl<unk>  (1907-1999), who published an article about them in 1937.
Lisch nodule
Hampton's hump
Erlenmeyer flask deformity
Wormian bones
Unicameral bone cyst
Intraosseous lipoma
Supernumerary nipple
Ganglion cyst