Nubecula vs. Cornea — What's the Difference?

(astronomy) A nebula; specifically, the Magellanic Clouds.

The cornea is the transparent front part of the eye that covers the iris, pupil, and anterior chamber. The cornea, with the anterior chamber and lens, refracts light, with the cornea accounting for approximately two-thirds of the eye's total optical power.

(medicine) A slight spot on the cornea.

The transparent convex anterior portion of the outer fibrous coat of the eyeball that covers the iris and the pupil and is continuous with the sclera.

(medicine) A cloudy object or appearance in urine.

(anatomy) The transparent layer making up the outermost front part of the eye, covering the iris, pupil, and anterior chamber.

A nebula.

The transparent part of the coat of the eyeball which covers the iris and pupil and admits light to the interior. See Eye.

A slight spot on the cornea.

Transparent anterior portion of the outer covering of the eye; it covers the lens and iris and is continuous with the sclera