Question

Define cornea and other parts of the eye

Answer 1

Sclera is made up of fibrous tissue and is white in colour it bulges out and become transparent this part is called cornea.the choroid layer is the second layer it has pigment which absorbs light rays the iris is also its extention it also has a pupil .The retina contains rods and cones which adjust light entering the eyes.

Answer 2

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.In humans, the refractive power of the cornea is approximately 43 dioptres.[3] While the cornea contributes most of the eye's focusing power, its focus is fixed. The curvature of the lens, on the other hand, can be adjusted to "tune" the focus depending upon the object's distance. Medical terms related to the cornea often start with the prefix "kerat-" from the Greek word κέρας, horn.