Structure of Human Eye
The human eye is a spherical structure of diameter 2.3 cm and there is some fluid filled inside the eye. It is connected to the human skull through some muscles that allow the eyeball to move freely inside the eye cavity. The eye cavity is protected from the outside by the eyelid which provides the required protection to the eyes from foreign particles.
There are various parts of the human eye that are discussed below in the article.
Parts of the Eye
The human eye is made up of various parts and all of the parts of the human eye are discussed below.
Vitreous Chamber: The inner volume of the eyeball where the eyeball is placed is called the Vitreous chamber. It maintains the proper pressure within the eye.
Sclera: The outer covering of the eyeball acts as a protective covering and is called the sclera. It is the white part of the eyeball.
Cornea: The part of the eye through which the light enters the eyeball is called the cornea. It is the front part of the Sclera.
Iris: The dark ring-like structure of the eye inside the cornea is called the Iris of the eye. It is the part that provides colour to the eyes and it helps the brain to adjust the exposure of the light entering the eyes.
Pupil: The pupil is a small opening in the Iris that allows the entry of light inside the eyeball. It is controlled by the Iris.
Lens: The lens is actually a lens made of muscles that is placed behind the iris that allows light to converge on the specific point inside the eye to form the image. The lens can adjust its focal length to allow light from all the sources to converge accordingly.
Retina: The light-sensitive layer at the end of the eyeball, where the light ray meets and the image is formed in the retina of the eye and the retina converts this image into electrical impulses that are then sent to the brain.
Optic Nerves: A nerve connected to the retina that transfers all the electrical information to the human brain is called the Optic Nerve. There are two types of optic nerves,
- Rods: These are the nerve cell that helps in peripheral vision and it is sensitive to even low light.
- Cones: These are the nerve cell that is used in visualizing various colors and are more sensitive to bright light.
Human Eye
Human eye is one of the most beautiful and complex human organs. This is used to see various objects. The eye allows us to see the beautiful world around us. It allows us to see various colors, visualize various objects, and help to identify various objects around us. We can compare the human eye to the camera that we see in our daily lives on our phones, laptops, tablets, and others.
Human eye can be called the living camera that transfers information about our surroundings to the brain so our brain can process this information and allow us to see the surroundings. In this article, we will learn about the human eye, its structure, its workings, and others in detail.