Human eye diagram

The human eye has several structures that enable entering light energy to be converted to electrochemical energy. This stimulates the visual centres in the brain, giving us the sensation of seeing. In this interactive, you can label parts of the human eye. Use your mouse or finger to hover over a box to highlight the part to be named. Drag and drop the text labels onto the boxes next to the eye diagram If you want to redo an answer, click on the box and the answer will go back to the top so you can move it to another box. If you want to check your answers, use the ‘Reset incorrect’ button. This will reset incorrect answers only. When you are happy with your selection, use the ‘Check answers’ button to check them. Use ‘Reset all’ to practise again from the start. Selecting or hovering over a box will highlight each area in the diagram. For optimal viewing of this interactive, view at your screen’s default zoom setting (100%) and with your browser window view maximised. See the Use the DOWNLOAD EXERCISE button for a PDF version of this interactive.

Diagram Of Eye The human eye is responsible for the most important function of the human body, the sense of sight. It consists of several distinct parts that work in coordination with each other. The most common The diagram of the eye is beneficial for Classes 10 and 12 and is frequently asked in the examinations. A brief description of the eye along with a well-labelled diagram is given below for reference. Well-Labelled Diagram of Eye • The anterior chamber of the eye is the space between the cornea and the iris and is filled with a lubricating fluid, aqueous humour. • The vascular layer of the eye, known as the choroid contains the connective tissue. • The iris and the choroid are connected by the ciliary body. • The Fovea is a minute pit located in the macula of the retina that provides clear vision. • The Cornea is a dome-shaped tissue covering the front of the eye. • Iris is the coloured part of the eye and controls the amount of light entering the eye by regulating the size of the pupil. • The lens is located just behind the iris. Its function is to focus the light on the retina. • The optic nerve transmits electrical signals from the retina to the brain. • The Pupil is the opening at the centre of the iris. Its size changes with the amount of light. • The retina lines the back of the eye and contains several photoreceptors. • Vitreous humour is the fluid present in the centre of the eye and provides form and shape to the eye. For Recommended Video:

How Do the Eyes Work? The eyes work in the same way as cameras. Light is reflected when you focus on an object and enters the eye through the cornea. As the light passes through, the dome-shaped nature of the cornea bends light, enabling the eye to focus on fine details. In addition to the retina, other visual components such as the pupil, iris (colored part of the eye), and lens help focus light rays on the retina. When light entering the eye hits the retina, special cells known as photoreceptors convert it into electrical signals. 1 The optic nerve carries these electrical impulses from the retina to the visual cortex (in the brain). The brain then interprets the impulses into the images you see. Eye Anatomy (16 Parts of the Eye & What They Do) The following are parts of the human eyes and their functions: 1. Conjunctiva The Conjunctivitis, often known as pink eye, occurs when this thin membrane becomes inflamed or swollen. Other eye disorders that affect the conjunctiva include: • Pinguecula (accumulation of protein and fat deposits in the conjunctiva) • Pterygium (a noncancerous growth that develops on the conjunctiva) • Subconjunctival hemorrhages (broken blood vessels) By generating mucus and tears, the conjunctiva helps lubricate the eyes. It also aids in immunological monitoring and prevents microorganisms from entering the eye. 2. Sclera The 2 On the exterior, the sclera is smooth and white, but on the inside, it is brown and has grooves that help properly attach ...

Anterior chamber. The front section of the eye's interior where aqueous humor flows in and out, providing nourishment to the eye. Aqueous humor. The clear watery fluid in the front of the eyeball. Blood vessels. Tubes (arteries and veins) that carry blood to and from the eye. Caruncle. A small, red portion of the corner of the eye that contains modified sebaceous and sweat glands. Choroid. The thin, blood-rich membrane that lies between the retina and the sclera and is responsible for supplying blood to the outer portion of the retina. Ciliary body. The part of the eye that produces aqueous humor. Cornea. The clear, dome-shaped surface that covers the front of the eye. Iris. The colored part of the eye. The iris is partly responsible for regulating the amount of light permitted to enter the eye. Lens (also called crystalline lens). The transparent structure inside the eye that focuses light rays onto the retina. Lower eyelid. Skin that covers the lower part of the eyeball, including the cornea, when closed. Macula. The central portion of the retina that allows us to see fine details. Optic nerve. A bundle of nerve fibers that connect the retina with the brain. The optic nerve carries signals of light, dark, and colors to a part of the brain called the visual cortex, which assembles the signals into images and produces vision. Posterior chamber. The back part of the eye's interior. Pupil. The opening in the middle of the iris through which light passes to the back of the ey...

What is the lens of the eye? The lens of the eye, also called the crystalline lens, is an important part of the In its natural state, the lens looks like an elongated sphere — a shape known as ellipsoid — that resembles a deflated ball. The average lens size in adults is approximately 10 mm across and 4 mm from front to back. The lens is made up almost entirely of proteins. In fact, proteins make up nearly 60% of the eye’s lens — a higher protein concentration than any other bodily tissue. The tissue is transparent, which allows light to easily enter the eye. It’s also flexible, so it can change shape and bend the light to focus properly on the Function of the lens of the eye The primary function of the lens is to bend and focus light to create a sharp image. To do that, the lens uses the help of ciliary muscles to stretch and thin out when focusing on distant objects, or to shrink and thicken when focusing on near objects. When light enters the eye, the lens will bend and focus incoming light directly on the retina, which is how the clearest possible image is produced. The crystalline lens projects a focused image on the retina. However, the initial image projected is inverted (either upside down or reversed). When the image is sent to the brain via the The The lens relies on the aqueous humor for energy and cleansing rather than nerves or blood flow. Aqueous humor is the clear fluid located between the Accommodation Accommodation refers to the lenses' ability to bounce b...

Our eyes are highly specialized organs that take in the light reflected off our surroundings and transform it into electrical impulses to send to the brain. The anatomy of the eye is fascinating, and this quiz game will help you memorize the 12 parts of the eye with ease. Light enters our eyes through the pupil, then passes through a lens and the fluid-filled vitreous body before it is projected onto the retina. What’s weird is, the projected image is actually upside down—the brain is able to flip it for us, so we don’t get turned around! The cornea is a clear covering that protects the front of the eye, and in the back, the optic nerve is responsible for sending electrical signals to the brain. From the cornea to the optic nerve and every part in between, this science quiz game will help make you an expert on the parts of the human eye!