The human eye functions to perceive visible light and maintain balance and circadian rhythms. It regulates the amount of light entering through the pupil and forms an image on the retina. The cornea and lens help focus light onto the light-sensitive retina. A camera is an optical device that takes pictures using a light-sealed box with an aperture to allow light through to form 2D or 3D images on a light-sensitive surface. The key components of both the eye and camera are structures that regulate light entry and focus it to form an image.

9. Functions of the Human Eye
• The human eye is a sensory organ that responds to
visible light and is a component of the sensory
nervous system. It enables us to use visual
information to perceive things, maintain our
equilibrium, and regulate our circadian cycle,
among other things.

10. Camera
• A camera is an optical device used to take pictures. While
most cameras only have a 2D sensor, some more
sophisticated versions have a 3D sensor. Most cameras, at
their most basic level, consist of a box that is sealed (the
camera body) and has a tiny hole (the aperture) through
which light may flow to create an image on a surface that
is sensitive to light.

13. POINT OF COMPARISON HUMAN EYE CAMERA
Regulates the amount of light
Part where the image is
formed
Part that help focus light
Controls the entry of light
Part that absorbs light and
minimizes reflection
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