The room is a feeling that is used to determine the circumstances of light stimuli it receives. The human eye is very similar to chicken eggs and implanted into the bone cavity of the face. camera eye has a similar mechanism of action or rather the camera was the one who had a similar job to menkanisme points. The discovery by the camera inspired by the human eye that can receive the light and form a visual image. There are three layers of tissue of the eye, the sclera, choroid and retina. Sclera is the tissue that is outermost. human sclera is blank except at the front of the colored translucent. Lymph is the cornea is called the passage of light entering the eye. The tears still wet fear and kill microorganisms on the front of the sclera. The eyes should be kept moist to reduce friction with the cornea and also to clean the dust from his eyes. Microorganisms and small animals, which are for the eyes put many will die because of the activity of hydrolytic enzymes, which are on a tear. The second layer, which is below the dermis, the choroid. In the part of the choroid, which gives a color to the human eye because it contains a large amount of pigment, that part of the iris is known. This makes the black eyes of Indonesia or blue or brown eyes green Europe. In addition to the color of the eye, the iris enters plays an important role in the amount of light that regulates the eye.
In the center of the iris is a hole called the pupil. The hole in a passage of light into the eye. Expand this student and narrow, a lot of light sediktnya Iris organize eye.When outside the well-lit room he entered, students limit the intensity of incoming light.Whereas reduce if you are in a dark place, the student will be extended to more than light can.
Behind the pupil of the eye, they are an integral part thereof, forming the image of the incident light. The human eye lens is imaged with the actual features, inverted and scaled. The eye can be thickened and diluted to adjust the shadow falls directly on the retina (eye that capture shadows). When the eye sees near objects, the goal is for the right eye thicken the shadows fall on the retina to focus. Search against, when distant objects thinned, the focusing lens, so that the shade and falls directly on the retina.
The ability to thicken and eye exhaustion is very influential in human vision. People who do thickens power of the lens of the eye with good suffer from myopia, and so aim to cushion the vision can not. Diseases caused by the inability of the lens of the eye works perfectly can be helped with the use of glasses.
The third layer is the cornea, the deepest part and a thin layer. The retina is the part of the eye incidents stimuli (light stimuli in the form of shadows, which was formed by the lens of the eye) will begin light. Photoreceptor cells of the retina, the light sensitive. The cells are divided into two types, namely the cone (conical) and stem cells. The cones are sensitive to bright light and works well in light to see. While stem cells are very sensitive to low light to operate in a communication in the dark. Human retinal stem cells have a number of more of cone cells. Owls and animals are nocturnal (night) are rich in stem cells, because these animals are active and feeding during the night.
Retina is a part that is more sensitive to light, this portion of yellow spots or fovea. When the shadows fall on the fovea, the object can be seen very clearly. Indeed, the fovea has a cone cells than rods. But in the eyes is a sensitive part of the light, because it has no cone cells, or stem cells, this section is called the blind spot. When shadows fall in the blind spot, the object will be as if it is not visible to the eye. To prove the existence of blind spots, the existence of blind spots can be done by conducting trial experiments.
Visual cells in the retina sends light stimuli into nerve cells receive pulses to the occipital lobe (rear) to ensure that the brain. In the brain, these light stimuli may be processed to generate an image of the object meets the eye. Beat the back of the head can cause the problem of the occipital lobe to ensure that dramatically vision blurs.
The eye of the cavities is filled with liquid which serves to maintain the position of the eyeball. The cavity is located between the cornea and the lens of the eye is filled with fluid called aqueous humor, while the vitreous cavity is drawn behind the lens. The operation of the eye
The light reflected by the object in the eye.
light passes through the cornea.
The light passes through the pupil. Iris is to reduce the size of the pupil when the light comes on. Light and increase students when the lights dim light.
enlighten the eye and concentrated to fall directly on the retina.
retina receives light converted into electrical impulses and sent to the nerve fibers of the central nervous. Parts of the brain that processes vision is the occipital lobe to the back of the head.
The thing with the eyes I do not know
The most common color in the world’s eyes are brown.
Eye color is determined by the amount of melanin in the iris.
the size of the eye has not changed much since birth.
All babies are color blind at birth.
We can not keep your eyes open and unblinking.
dogs can not distinguish between red and green.
The ostrich has a size larger than the mesh size of the brain.
Smoking is the ability to see at night to reduce.