What is the coloured part of eye called?
What is the coloured part of eye called?
Iris
Iris: The iris is the colored part of the eye that surrounds the pupil. It regulates the amount of light that enters the eye. Lens: The lens is a clear part of the eye behind the iris that helps to focus light and images on the retina.
What are the functions of each part of the eye?
The sclera, or white part of the eye, protects the eyeball. The pupil, or black dot at the centre of the eye, is an opening through which light can enter the eye. The iris, or coloured part of the eye, surrounds the pupil. It controls how much light enters the eye by changing the size of the pupil.
What are the whites of your eyes called?
Covering most of the outside of the eye is a tough white layer called the sclera. A clear thin layer called the conjunctiva covers the sclera. At the very front of the eye is a clear surface, like a window, called the cornea that protects the pupil and the iris behind that window.
Which part of eye is responsible for Colour vision?
Color vision is possible due to photoreceptors in the retina of the eye known as cones. These cones have light-sensitive pigments that enable us to recognize color. Found in the macula (the central part of the retina), each cone is sensitive to either red, green or blue light (long, medium or short wavelengths).
Why are my eyes blue in the white part?
Blue sclera: a bluish coloration of the whites of the eyes. The blue color is caused by thinness and transparency of the collagen fibers of the sclera, allowing the veins in the underlying tissue to show through. Blue sclerae are characteristic of a number of conditions, particularly connective tissue disorders.
Why are the white of my eyes not white?
This occurs due to elevated bilirubin levels in the blood stream that deposit in the conjunctiva of the whites of the eye. It can be a sign of liver or gallbladder (hepato-biliary) disease but can also occur in healthy people with slight variation in their liver metabolism.
Is your eye a hole?
The sclera (the white part of the eye) is the opaque, fibrous, protective outer layer. The pupil is the hole located in the center of the iris. It allows light to enter the eye. The pupil appears black because light rays entering the pupil are absorbed by the tissues inside the eye.