Question

The figure below compares a part of our eye with a part of a photographic camera.
(a) Name the corresponding parts of the eye and the camera shown here that are comparable in function.
(b) Explain the mode of working and the functions of the parts of the eye mentioned above.

Answer 1

The cornea is comparable to the lens cover of the camera, as the cornea is the “cap” of the eye, is transparent in nature and sits at the front of the eye and has a spherical curvature, it covers the iris, pupil and anterior chamber and provides most of an eye’s optical power. The lens of a camera is also transparent and sits at the front of the camera body and maintains a spherical curvature.

Iris is comparable to the aperture of the camera, as aperture controls the amount of light entering the camera, similarly, iris controls how much light enters the eye by changing the size of the pupil.