When you look around you out in open air and in a broad field, you can readily see all objects farthest and closest to you in all their colors, shape, and size. This view, which you have obtained without making any effort, is produced as a result of numerous complex reactions and interactions in your body. Now let us look at these complicated operations closer.
The human eye has a fully automatic mechanism that
works perfectly. It is made up of the combination of 40 different basic
parts and all these parts have critical functions in the process of
seeing. Any defect or disability in even one of these parts would make
The transparent layer in the front part of the eye is
cornea. Right behind lies the iris. Giving the eye its color, the iris
adjusts its size automatically according to the sharpness of light
thanks to the muscles attached to it. For example, if we are in a dark
place, the iris widens to take in as much light as possible. When light
increases, it shrinks to decrease the amount of light coming into the
Another eye mechanism working parallel to this structure is the lens. The duty of the lens is to focus the light coming to the eye onto the retina layer at the back of the eye. Thanks to the movement of the muscles around the lens, light rays coming to the eye from different angles and distances can always be focused on the retina.
All the systems we have mentioned are far smaller yet far more superior to the mechanical devices designed by the use of the latest technology in order to imitate the eye. Even the most advance artificial imaging system in the world remains extremely simple and primitive compared to the eye.
When we think of the effort and knowledge that has
been put into developing these artificial imaging systems, we can
understand with what a superior creation the eye is made.
If we examine a single cell in the eye at the microscopic level, the superiority of this creation will be further revealed.
Let us suppose that we look at a crystal bowl full of fruit. The light rays coming from this bowl to our eye pass through the cornea and iris and are focused on the retina by the lens.
So, what happens in the retina so that the retinal cells can perceive light?
When light particles, also called, photons, strike the cells in the retina, they produce a cascading effect like a row of dominoes carefully arranged one after the other. The first of these dominoes in the retinal cells is a molecule called 11-cis-retinal. When a photon of light interacts with it, this molecule changes shape. This forces a change in the shape of another protein, rhodopsin, to which it is tightly bound. Now, rhodopsin takes such a form that it can stick to another protein, called transducin, which was already present in the cell, but with which it could not interact before due to its shape's incompatibility. After this union, another molecule called GDP also joins in this group.
Now, two proteins-rhodopsin and transducin-and a chemical molecule called GDP have bound together.
This mechanism changes the ion concentration in the
cell and produces electrical energy. This energy stimulates the nerves
lying right at the back of the retinal cell. Consequently, the image
that came to the eye as a photon of light sets on its journey in the
form of an electrical signal. This signal contains visual information
about the object outside.
At this point, another set of complex operations takes place. The electrical energy is transformed into chemical energy without any loss of the information being carried and in this way the information is transmitted from one nerve to the next. The chemical carriers located at the junction points of nerve cells successfully convey the information contained in the stimulus coming from the eye from one nerve to another. When transferred to the next nerve, the stimulus is again converted into electrical signal and continues its way until it reaches another junction point.
Making its way to the center of vision in the brain
in this way, the signal is compared to the information in the center of
memory and the image is interpreted.
Of course at the same time many other equally complex
operations are taking place in other parts of the body. We may
simultaneously hear the sound of the image we are viewing, and
depending on circumstances we may sense its odor and taste and feel its
touch. Meanwhile, millions of other operations and reactions have to
continue without interruption in our body if we are to go on living.
biochemical properties of the eye that have been discovered by modern
science dealt a greater blow to Darwinism than Darwin could ever have
The complete process of seeing that we have summarized in barest outline here is even more complex in its details. However even this summary is enough to show what a glorious system has been created in our body. The reactions taking place in the eye are so complex and so finely tuned that it is quite unreasonable to think that these are a product of chance occurrences as the theory of evolution claims.
Michael Behe, a recognized professor of biochemistry, makes this comment on the chemistry of the eye and the theory of evolution in his book Darwin's Black Box:
But as we have seen, the theory of evolution is
unable to account for a single system in a single living cell, much
less explain life as a whole.
Having utterly demolished the hypothesis that life is
'simple', science demonstrated to humanity a very important fact. Life
is not the product of unplanned happenings. It is the result of a
perfect creation. The perfect creation of a superior Creator, Who
brought life into being, Who is God, the Lord of the Universe.
It is He who created both humans and all other living beings. It is only logical that we, humans, worship GOD alone.
Article courtesy of www.DesignandUniverse.com