The human eye is the organ that see
The eye is the organ that gives us the ability to detect light, to learn about the world, allowing one of the five senses in comparison. We use our eyes for almost any occasion, easy to read, work, watch TV, write a letter, driving and other activities that are not infinite.
The view is the most precious sense of the five senses, and many people fear blindness more than any other default. Eyes that can see shapes, colors and dimensions of objects in the world and interpret such treatment, the light reflected by the objects, the release of light.
Anatomy of the Eye
Approach of the currency
Transform the light beam eyes into electrical signals, and then sends to the brain which interprets the electrical signals in the form of visual images. eyeball in a hollow cone protection in the skull containing the Appellate orbit or take an inch in diameter. Orbit is surrounded by a soft fatty tissue layer that protects the eye and easy to turn left. Six muscles regulate the movement of the eye. Between the parties, which is more important than the human eye, the iris or the iris, cornea or the cornea, lens, retina, of the conjunctiva, the macula, and the optic nerve.
The cornea is the collection of window-shaped transparent dome on the front of the eye. corneal diopter which is strong to provide 2/3 of the power of the eye focusing. Cornea serves as a way for our view of the window.
Colored eye, called the iris portion or iris. This section controls the level of light entering the eye, such as the opening of the camera. A round opening in the center of the iris called the pupil. Iris drowned with small muscles (dilation) and reduce the increase in size (narrow) of the pupil.
The pupil is the black circle in the center of the opening of the iris. The pupil opens and closes to control the amount of light entering the eye.
Objective function is to focus light on the back of the eye. Basis, the deepest portion of the lens is surrounded by a material called softer bark. These lenses are in the capsular bag and wrapped like a small membrane called zonules hanging in the eye.
Vitrified substance is thick, transparent fills the center of the eye. Most of the water to about 2/3 of the volume of the eye that makes the shape.
The conjunctiva is a thin transparent tissue that covers the external surface of the eye. Starting from the outer edge of the cornea, covers the visible part of the eye and inside the eyelid. This network is in the hands of small blood vessels that are almost invisible to the naked eye.
Sclera, which is commonly known as “white of the eye” is a hard tissue, which serves opaque outer protective layer of the eye.
Choroid lies between the retina and the sclera. Choroid consists of a layer of blood vessels that nourish the eye fundus.
The macula is located approximately in the center of the retina, the optic nerve temporary. The macula is a small and highly sensitive part of the responsibility for significant detailed vision retina. The fovea is the central part of the macula. The macula allows us to understand the details and tasks that require central vision such as reading.
The retina is a tissue with a very thin layer. The inside of the right to the retina of the eye to catch the rays of light in the eye. the light pulses are sent to the brain for processing via the optic nerve.
The optic nerve transmits electrical impulses from the retina to the brain. The optic nerve connects to the back of the eye near the macula. visible part of the nerve called papilla