Joe Navarro - Here is an eye, notice that the limbal ring here, perhaps less attractive than the previous pictures, because it has deposits of cholesterol. | Facebook
Limbal ring - Wikipedia
The Secret to Making Eyes More Attractive, Backed by Science | Fstoppers
Limbal Rings: What They Are and Who Has Them
Joe Navarro on Twitter: "@ASJbrand That was the only thing altered, the limbal ring. there were no other changes. but that one change alone makes us think there are other positive traits.
Masters part 11: Limbal rings – deathlake
Example faces with (left) and without limbal rings | Download Scientific Diagram
Contacts lenses that define border of iris take years off your face, makers claim | Daily Mail Online