Why is it that the image in retina inverted?

Answer 1

We can see object because an image of the object is formed on the retina which is behind the lens which normally has convex shape. As expected, the image of the convex lens is always inverted. So on the retina we get an inverted image.

Though the image in retina appears inverted, our brains have been trained to “see” the image as inversion of the inverted image. Therefore we remain to see the objects as they are.

Answer 2

I agree with Iani s. The object rays are very much away from the focal length of our eyes. So, the rays act as if they are coming from infinity. After passing through the lens they converge to a point sized object on the retina and is always inverted. The brain enlarges and makes the image straight for us and thus, we see a clear image.
If the object is near our eyes, the lens reduces its focal length and thus we can see those too.

Answer 3

The image is inverted because the retina is past the focal point of the lens.

Images in front of the focal point are upright, images past the focal point are inverted.
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