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Webster 1913 Edition

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Noun.

[Gr.

κέρας

-ατος

, horn + [GREEK] puncture.]

(Med.)

The operation of removing a cataract by thrusting a needle through the cornea of the eye, and breaking up the opaque mass.

keratonyxis ‎(uncountable)

(medicine, archaic) The operation of removing a cataract by thrusting a needle through the cornea of the eye and breaking up the opaque mass.