Human eyes is one of the greatest creation of nature, which is given to us by nature. Or we can say that we got this amazing thing by the process of evolution. When life started on earth, at that time living organism don't have any organ like eyes to see anything around them. But the process of evolution goes on and living organism got eyes like spot on their body which can only give the sight of presence of light...
This process of evolution continues and after thousands of years of evolution living organism at that time got an amazing organ which can see everything around them. This organ is eyes...
At that time every type of living organism got the organ of complete sight known as eyes.. now life became very easy for them,, they can see any thing around them,,..this process of evolution brings great change in the living organism present on earth...
Now,, human beings also get this wonderful organ,, known as eyes. So,, now talk about how we see anything around us..??
First of all light falls on any objects and reflect in different directions.. these reflected light when,, falls on our eyes,, than it undergoes in the process of refraction.. and due to the presence of convex lens in our eyes.. reflected light converges and meet at a screen of an eyes knowns as Retina... so take care of this wonderful gift of nature.
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