Which of the following is the function of Iris?

Which of the following is the function of Iris? Correct Answer to change the <span style="">diameter of</span> pupil

Concept:

Human Eye 

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• The human eye is one of the most valuable and sensitive sense organs.
• It uses light and enables us to see the colorful world around us.
• The human eye is more or less like a photographic camera.
• The lens system of the eye forms an image of an object on a light-sensitive screen.

Functions of Parts

• Cornea: The cornea is the outer transparent part of the eye that protects the eyes from external agents. 
• Iris controls the pupil which controls the amount of light. Iris gives distinct color to the eyes. The brown eye or blue eye actually is the color of the iris. 
• The eye lens is a spherical lens that forms an image of the object on the retina. 
• The retina is a screen that sends information to the brain through the optic nerves 
• The focal length of the eye lens is maintained by the ciliary muscles. It reduces the focal length by stretching itself to see nearby objects and relaxes to increase the focal length to see far objects. 

Explanation:

• So, from the above functions of parts, we can say
• Corena protects the eyes.
• ciliary muscles change the focal length
• Image is formed on the retina
• Iris provides color to the eyes.