Gérontoxon

The gérontoxon , also called " senile arc of the Cornea " , is an opacity forming a ring (or a portion of ring) of color gray-blanchâtre to the periphery of the cornea at the people of Middle Age or the elderly. It is due to a lipidic infiltration of the corneal stroma. With the age, this opacity progresses until forming a complete, separate ring limb by a clear zone of the cornea. In the event of appearance at a young person or of Middle Age, one will speak about embryotoxon (the ring has more marked white color then). At the man, the embryotoxon is often associated with a cardiac disease.

Source

  • the New Dictionary Of the Vision, by Michel Millodot, Médiacom Vision Editor.

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