Updated January 12, 2016. You've just completed your annual eye exam and your doctor says you passed with flying colors. 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. Sometimes detected during a dilated eye examination, these pigmented spots are usually flat and slate-greyish in color.