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June 1968

On the Nature of Dellen

Arch Ophthalmol. 1968;79(6):657-662. doi:10.1001/archopht.1968.03850040659002

Dellen are small, saucer-like excavations at the margin of the cornea. They occur most often following processes which produce a paralimbal elevation. It is suggested that this paralimbal elevation induces a localized break in the precorneal oily film layer of the tears which, in turn, causes a localized dehydration and thinning of the cornea. Treatment is directed towards rehydration of the cornea and reduction of the limbal elevation.