The base of the triangle is toward the limbus (area in the eyeball where the cornea and sclera meet). The yellow color is due to an increase in elastic fibers.
2. A yellow spot on the white of the eye, usually toward the inside (nose side) of the eye, associated with aging.It looks fatty (in Latin the wordpinguiculus means "fattish"), and is the result of an accumulation of connective tissue.