Limbal ring

A limbal ring is a dark ring around the iris of the eye, where the sclera meets the cornea. It is a dark-colored manifestation of the corneal limbus resulting from optical properties of the region.

Source: Wikipedia — Limbal ring (CC BY-SA 4.0)

Limbal ring

A limbal ring is a dark ring around the iris of the eye, where the sclera meets the cornea. It is a dark-colored manifestation of the corneal limbus resulting from optical properties of the region.

Source: Wikipedia "Limbal ring" · CC BY-SA 4.0

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