Limbal ring
Natural dark ring around the iris of the eye
Nº Q6548966 ★★
Uncommon · Knowledge
Limbal ring
Natural dark ring around the iris of the eye
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.
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From Wikipedia
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. The appearance and visibility of the limbal ring can be negatively affected by a variety of medical conditions concerning the peripheral cornea. It has been suggested that limbal ring thickness may correlate with health or youthfulness and may contribute to facial attractiveness. The thickness of the limbal ring varies by pupil dilation: When the pupil is larger, the limbal ring narrows. Some contact lenses are colored to simulate limbal rings.
Text: Wikipédia, CC BY-SA 4.0. · Image: Chianti (FAL) ·
