Detailed Structure Of Human Eye
The main parts of the human eye are the cornea iris pupil aqueous humor lens vitreous humor retina and optic nerve. The eye has a number of components which include but are not limited to the cornea iris pupil lens retina macula optic nerve choroid and vitreous.
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It is made of an elastic capsule containing proteins and water which refract light at a constant rate just like the lenses used in glasses.
Detailed structure of human eye. The human eye is a paired sense organ that reacts to light and allows vision. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy Safety How YouTube works Test new features Press Copyright Contact us Creators. Eyes are organs of the visual systemThey provide animals with vision the ability to receive and process visual detail as well as enabling several photo response functions that are independent of visionEyes detect light and convert it into electro-chemical impulses in neuronsIn higher organisms the eye is a complex optical system which collects light from the surrounding environment.
But the lens that performs the final focusing of light is found inside the eye behind the pupil. The iris controls the size of the pupil which is the opening that allows light to enter the lens. The iris contains circular muscles which go around the pupil and radial muscles that radiate toward the pupil.
Structures auxiliary to the eye The orbit. It is enclosed within the eye sockets in the skull and is anchored down by muscles within the sockets. Light projects through your pupil and.
Just behind the iris and pupil lies the lens which helps focus light on the back of your eye. The eye muscles are responsible for the up and down as well as the left and right movement of the eye. FIeld of VISIon And dynAmIc rAnge of HumAn eye In this session you will learn about the field of vision and the dynamic range of the.
The eye is part of the sensory nervous system. Observe various charts displaying the anatomy of eye. This is the part that identifies a persons eye colour.
Most of the eye is filled with a clear gel called the vitreous. Near the front of the eye in the area protected by the eyelids the sclera is covered by a thin transparent membrane conjunctiva which runs to the edge of the cornea. The iris regulates the size of the pupil which in turn regulates the amount of light that enters our eyes and finally the ciliary muscles regulate the power optical power of our eyes depending upon the viewing distance.
Light enters the eye by passing through the transparent cornea and aqueous humor. Human Eye Anatomy seen from above For more details about specific structures of the eye and how they function visit these pages. Structure of anatomy human eye.
It consists of the following parts. Check Your Progress B. In addition to the eyeball itself the orbit contains the muscles that move the eye blood vessels and nerves.
The outer covering of the eyeball consists of a relatively tough white layer called the sclera or white of the eye. Light enters the eye through the cornea. Colored part of the eye that helps regulate the amount of light that enters.
Detailed diagram of eyeball. The orbit also contains the lacrimal gland that is located underneath the outer portion of the upper eyelid. The White Of The Eye.
It has layers of soft tissue surrounding a firm nucleus. Rod and cone cells in the retina are photoreceptive cells which are able to detect visible light and convey this information to the brainEyes signal information which is used by the brain to elicit the perception of color shape depth movement and other features. Conjunctiva Of The Eye.
The front transparent part of the sclera is called cornea. It is the outer covering a protective tough white layer called the sclera white part of the eye. Vector illustration - download this royalty free Vector in seconds.
Macula Lutea Of The Eye. The eye is cushioned within the orbit by pads of fat. The lens is a complex structure.
Light is focused by the lens and goes through. The jelly-like substance the vitreous humour maintains the shape of our eyeball. Aperture Of The Eye.
A human eye is roughly 23 cm in diameter and is almost a spherical ball filled with some fluid. The human eye is a roughly spherical organ responsible for perceiving visual stimuli. The Uvea Of The Eye.
Working of the Human Eye. Clear front window of the eye that transmits and focuses light into the eye. Structure of Human Eye.
Label the parts of the eye in Figure 12 and also list them in the Table given below. Cornea Of The Eye. Thus the floor of the orbit is made up of parts of the maxilla zygomatic and palatine bones while the roof is made up of the orbital plate of the frontal bone and behind this by the lesser wing of the sphenoid.
The eye is protected from mechanical injury by being enclosed in a socket or orbit which is made up of portions of several of the bones of the skull to form a four-sided pyramid the apex of which points back into the head. When we look at an object the light falling on it is reflected towards our eyes and it enters the eye through the transparent layer of cornea which helps in focusing the light. The iris is a flat thin ring-shaped structure sticking in to the anterior chamber.
Hence it does not possess a perfect spherical shape. The choroid continues at the front of the eyeball to form the Iris. Anatomically the eye comprises two components fused into one.
The eye is our organ of sight.
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