how is an image formed in the eye?how is it compared to a camera?

Answer 1

Images aren't formed in the eye. They are formed in the brain.

Answer 2

This is how a image is formed in the eye, which scientist have recreated in a cmera with electronic parts.

We now know the process of how we can perceive light at a molecular level. But how is the image formed?
Location of visual cortex in brain

Light from our surroundings enters our eye through the dioptric media --- cornea, lens, aqueous humour and vitreous body. Among these, the anterior part of the cornea accounts for providing nearly 2/3 of the refractive power, because it has a highly curved surface and high refractive index.

Light stimulates the photoreceptors on our retina to produce nerve impulses, which will travel along the optic nerve to the visual cortex of our brain. Image is real, inverted and smaller The image formed on the retina is real, inverted and smaller. However, on interpretation by the brain, the images will be upright. This is an inborn ability. Some people put it in this way: we 'see' with our brain, not our eyes.

You may have heard of some people who deliberately invert themselves (stand upside down). After some days, the brain will let them see upright images again.

Answer 3

The image formed in the eye is real inverted and small.In the same way the camera has a real inverted and small image.The image in the camera is formed on the screen that is film so also the image in the eye is formed on the retina which is the screen of the eye.

Answer 4

It is useful to think of an image as a collection of points all corresponding to a point on the object. Light reflecting off the object moves in straight lines in all directions away from the object. The points of light from the object that hit the lens of an eye are bent (or refracted) and brought into focus as a point of light on the retinal image. Thus, the image is a mosaic of light points that are brought to focus by the refraction of the lens. An image is projected at a fixed focal distance from the lens and appears small and upside-down (see the figure below). The projection can be captured on a screen, the retina. If the object moves closer or farther from the lens the image will blur unless the curvature of the lens is changed. Luckily for us, small muscles attached to the eye lens are constantly changing its curvature (a process called accommodation), and our world appears as a sharply focussed image. The points of light of the image then stimulate the retinal cells to induce information transferal to the brain.

for more information - http://ebiomedia.com/gall/eyes/Images.html

It is same like camera. Actually camera is developed by using the principle of eye.

Answer 5

The image that is formed inside the eye is in the same way as an image is formed inside a pin-hole camera the eye or the retina does not see the images that are formed inside the eye or falls on the retina . it is th ebrain that sees the image flling on the retina as the light that falls on the retina sends impulses corresponding to the intensity , wave engnth etc of the light forming the image on the retina . The formation of theimage inside theeye is in no way diferent from the way the camera does altering the focal lenght and itensity of thelight by shrinking or dialating the hole that lets in light depending on the intensityof light out side .

Answer 6

Image is firstly formed due to lights present as we can see that when lights are off we can not see any thing. So under good intensity of light first the reflection falls under retina of human eye this image is analysed by brain and decoded in the form of sight.
While in the camera same thing is happened only difference is that the signals are decoded using RAM of camera and is displyed as an image.

Answer 7

An image is formed on the retina of the eye just as on the screen of a pin hole camera, being real, reduced and inverted.

Answer 8

IMAGE OF AN OBJECT IS FORMED INVERTED ON OUR RETINA.IN THIS CASE WHEN LIGHT FROM AN OBJECT ENTERS OUR EYE FIST OF ALL THERE IS REFLECTION BY CORNEA AND THEN BY LENS IN OUR EYES OUR EYE IS VERY MUCH SAME TO CAMERA .UNLOIKE CAMERA IMAGE FORMED IS NOT PERMANENT JUST LIKE CAMERA THERES A SHUTTER CORNEA IMAGES FORMED ON RETINA ARE SENT TO BRIAN VIA OPTIC NERVES .MAIN DIFFERNCE BETWEEN CAMERA AND EYE IS THAT FOCAL LENGTH OF A CAMERA CANNOT BE CHANGED BUT THAT OF AN EYE CAN BE CHANGED BY THE ACTION OF CILLIARY MUSCLES.

Answer 9

light rays enter eye &pass through eye lens which form an inverted image on retina which through nerve cord send it to brain that interpretes it and we see it.
in camera also there is a lens through which rays pass and form image on its screen.

Answer 10

light from the object passe through cornia,aqueous humour,vitreous humour and converge at a point at retina.the electrical impulses are taken to brain by the optic nerve and are taken to visual area of cerebrum.