However, while examining the inside of your eyes, he discovered a small choroidal nevus. Although the name sounds complicated, a choroidal nevus is simply a freckle inside the eye. A choroidal nevus is the name given to a spot, freckle or mole that appears inside the eye or on the eye's surface. 1  Sometimes detected during a dilated eye examination, these pigmented spots are usually flat and slate-greyish in color.