What is the limbal ring?

The limbal ring is a ring that appears in the eyes around the iris, between the cornea and the sclera, an area known as the limbus or sclerocorneal junction. This ring is darker in color than the rest of the iris and usually lightens with age.

The appearance of the limbal ring has a strong component of optical effects produced by the refraction of light, which is different at the edge of the cornea than at the rest of the iris. It also has a strong anatomical component in the eyes of some people.1.

The width and color of the limbic ring is seen to be influenced by age, being wider and darker at earlier ages. In babies it can be practically black and very marked. In addition to age, some diseases that affect the cornea can cause premature thinning of the limbic ring.

Some people may have prominent limbic rings even at an advanced age, due to genetic factors, although usually from the age of 30 they start to get thinner and lighter.

The limbal ring is considered in some places as a sign of youth and beauty. If it doesn’t appear naturally, some people choose to wear contact lenses that provide it along with different colors for the iris area if desired. Before using them, an ophthalmologist or ophthalmologist should be consulted.

Fleischer and Kayser–Fleischer rings

The limbic ring is a natural feature of the eyes that appears to a greater or lesser extent in all people. Not to be confused with the abnormal staining of the sclerocorneal limbus which causes some diseases, for example Kayser-Fleischer ring and he Fleischer ring:

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Kayser-Fleischer ring: brownish-brown ring caused by copper deposits in Descemet’s membrane, one of the five layers that make up the cornea, due to certain liver diseases such as hepatolenticular degeneration or cholestasis. Fleischer’s Ring: Yellow to dark brown ring. It is caused by accumulation of hemosiderin, an iron-containing protein, in basement membrane cells at the periphery of the cornea. It is associated with some diseases such as keratoconus.

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