The term "keratoconus" originates from Greek words: Kerato: Derived from the Greek word "keras" (κέρας), meaning horn or cornea. Conus: Derived from the Greek word "konos" (κῶνος), meaning cone. Therefore, "keratoconus" literally translates to "cone-shaped cornea" or "conical cornea".

The cone shape is a primary characteristic seen in KC