DictionarycorneaClear eye covering
noun

cornea

KOR-nee-uh/ˈkɔːrniə/

The transparent front layer of the eye.

The clear cornea curves over the iris and pupil.

Accurate oblique cutaway of front of human eyeball: clear convex CORNEA outer dome visibly continuous with white sclera and positioned in front of brown iris and black pupil, iris behind dome separated by anterior chamber, small clear lens farther behind iris.
Etymology

The “horny sheath” image refers to this covering’s firm consistency. The transparent front of the eye was named for that horn-like physical quality.

In context

i24NEWS English200:17
a bullet fragment penetrated his cornea and he lost use of his eye
🔴 ISRAEL-HAMAS WAR DAY 98: ISRAEL PRESENTS ARGUMENTS AT ICJ

More examples

  • The cornea helps focus light as it enters the eye.
  • A scratched cornea can make blinking painful.
  • The doctor examines both corneas for signs of damage.

Forms

cornea · corneas · corneae

corneal adjective — Relating to the eye’s transparent front layer.