The retina converts light into electrical impulses that are sent to the brain through the optic nerve.Ī clear gel that fills the inside of the eye. The light-sensitive tissue lining at the back of the eye. Labeled Diagram of Human Eye The vascular layer of the eye, referred to as the choroid, contains the animal tissue. The iris adjusts the size of the pupil and controls the amount of light that can enter the eye. It is located in the center of the retina and contains the fovea.Ī bundle of more than one million nerve fibers that carries visual messages from the retina to the brain. The small sensitive area of the retina that gives central vision. The colored part of the eye that regulates the amount of light entering the eye.Ī clear part of the eye behind the iris that helps to focus light or an image on the retina. The center of the macula gives the sharpest vision. ![]() The clear outer part of the eye’s focusing system located at the front of the eye. Iris: The iris is the colored part of the eye that regulates the amount of light entering the eye. Contact Harvard Eye Associates at 94 or to schedule an appointment today.Source: Courtesy of the National Eye Institute Macula Retina Iris Lens Pupil Cornea Iris Vitreous gel Optic nerve Here are descriptions of some of the main parts of the eye: Cornea: The cornea is the clear outer part of the eye’s focusing system located at the front of the eye. Keep them healthy by maintaining regular vision exams. Our eyes are vital for seeing the world around us. It is mostly water and gives the eye its form and shape. In the eye diagram, the VSA displays vertical lines at the symbol positions. For example, if the length of the eye diagram is one symbol, the eye diagram is positioned on the x-axis between -1/2 symbol and +1/2 symbol. Contact Harvard Eye Associates at 94 or to schedule an appointment today. The VSA centers the eye diagram on the display such that the eye is in the center of the display. Vitreous Gel: A thick, transparent liquid that fills the center of the eye. Vitreous Gel: A thick, transparent liquid that fills the center of the eye. It contains millions of photoreceptors (rods and cones) that convert light rays into electrical impulses that are relayed to the brain via the optic nerve. To understand the eye and its functions, its important to understand how the eye works, see below diagrams for both the external eye and the internal eye. ![]() Retina: Light-sensitive tissue that lines the back of the eye. Eye Anatomy Handout Author: National Eye Institute, National Eye Health Education Program Subject: Diabetes and Healthy Eyes Toolkit and Website Keywords: Eye anatomy, eye diagram, cornea, iris, lens, macula, optic nerve, pupil, retina, vitrous gel, diabetic eye disease. human eye Anatomy of the visual apparatus Structures auxiliary to the eye The orbit The eyelids The conjunctiva The fibrous layer The muscles of the lids. It changes size as the amount of light changes. Pupil: The opening in the center of the iris. Optic Nerve: The nerve that transmits electrical impulses from the retina to the brain. ![]() Macula: The small area at the center of the retina responsible for what we see straight in front of us. Lens: A crystalline structure located just behind the iris – it focuses light onto the retina. Iris: The colored part of the eye that controls the amount of light that enters the eye by changing the size of the pupil. Nutrition of the eye is dependent upon blood vessels in the choroid.Ĭiliary Body: the part of the eye that connects the iris to the choroid.Ĭornea: The clear, dome-shaped tissue covering the front of the eye.įovea: A tiny pit located in the macula of the retina that provides the clearest vision of all. ![]() Let’s look at a few of the main parts of this vital organ:Īnterior Chamber: The space between the cornea and the iris, filled with the aqueous humor.Ĭhoroid: The vascular layer of the eye, containing connective tissue. It is made up of many distinct parts working in unison together and in order for the eye to work at its best, all parts must work well collectively. The eye is one of the most complex organs in the human body. Posted in Eye Health, Uncategorized | August 5, 2018Įven though the eye is small, only about 1 inch in diameter, it serves a very important function – the sense of sight.
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