Lipofuscin

Lipofuscin is the name given to finely granular yellow brown pigment granules composed of lipid-containing residues of lysosomal digestion. It is considered one of the aging or "wear and tear" pigments; found in the liver, kidney, heart muscle, adrenals, nerve cells, and ganglion cells.It is specifically arranged around the nucleus. It does not affect normal cellular morphology and function. "Liver spots" commonly associated with aging are superficial dermal lipofuscin deposits.
See more at Wikipedia.org...

Lipofuscin /lipo·fus·cin/ any of a class of fatty pigments formed by the solution of a pigment in fat. lip·o·fus·cin n. [more]Lipofuscin - Community and Resources

fatty deposits in the retina which are thought to be toxic to retinal cells. A by-product of drusen.