I'm the dim light and it constricts in the bright light causing the right amount of light to enter the eye, thus forming an image on the retina. Its size changes with the amount of light. Pupil is the opening at the center of the iris. The optic nerve arises from the optic disc and it takes the information of any object or image that you are seeing up to the brain. The optic nerve helps in transmitting the electrical signals from the retina to the brain. This focuses the light rays falling onto it on the retina causing the formation of the image. Lens presence also divides the front part of the eye into anterior and posterior chamber. Its function is to focus the light on the retina. The lens is located just behind the iris. Iris is that it coloured a part of the eyes and controls the quantity of light entering the eyes by regulating the dimensions of the pupil. This dome-shaped cornea is a transparent dome that will help the light to pass through them up to the lens,resulting in the formation of the image at the back of the eye,that is the retina. This pit is situated in the posterior part of the eyeball.Ĭornea is a dome-shaped tissue covering the front of the eye. Fovea is a pit structure that is present in the layer macula lutea. The color of the eye of any person you witness is due to the iris part of their eye.įovea is a minute pit placed in the macula of the retina that helps in forming a clear vision. The iris is a colored part of the eye that provides color to your eyes. The iris and therefore the choroid are connected by the membrane. This layer is filled with blood, that is this layer has a good supply of blood. The vascular layer consists of blood vessels. The vascular layer of the eye, referred to as the choroid, contains the animal tissue. The anterior chamber of the eyes is the space between the cornea and therefore the iris and is crammed with a lubricating fluid, aqueous humor. The eyes of all mammals consist of a non-image-forming photosensitive ganglion within the retina which receives light, adjusts the dimensions of the pupil, regulates the availability of melatonin hormones, and also entertains the body clock. The human eye is a part of the sensory nervous system. The human eye is capable of distinguishing between about 10 million colors, and it can also detect a single photo. The basic functions of Rods and Cones are conscious light perception, color differentiation and depth perception.

There are two kinds of cells in the eye namely rods and cones. The human eye is one of the most important organs of the human body which when interacted with light gives us the sense of sight or vision. Firstly let's have a look at the human eye. Human Eye due to not being taken care of properly results in getting defected and you will know about such defects here also. All this information you are going to receive in this article in brief. Even the formation of an image includes a number of processes. There are many things that are in the eye. Have you noticed it? This is specially due to the color of eyes. There are different colors of human eyes. It is just like a camera having a lens in it. Duplication for commercial use must be authorized in writing by ADAM Health Solutions.The Human Eye is the main visual organ of our human body. Links to other sites are provided for information only - they do not constitute endorsements of those other sites. A licensed physician should be consulted for diagnosis and treatment of any and all medical conditions. The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition.

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Diagrams of an eye