Our amazing human body: Our eyes

In my humble opinion, I think that the most amazing organs of the human body are the eyes, part of our visual system. The fact they can let us see the world (with the help of the brain, of course), is a gift, and amazes everyone. Objects, images, colours, actions, living beings and many other infinite things can be seen thanks to our eyes; Eyes detect light and convert it into electro-chemical impulses in neurons. But with a limit, because our color perception let us see only a small range of electromagnetic spectrum, mainly between wavelengths of 400 and 700 nm. But other organisms with colour vision can detect ultraviolet light, like snakes or placental mammals. How lucky they are!

Just look in a mirror to know where the eyes are. They are small spherical organs with a diameter of 2.5 cm each (in the human body, the diameter varies in other living organisms). Located in the head, under the forehead and above the nose, they are protected with a thin layer of skin, called eyelid, and eyelashes that keep dust and other substances away from the eyes.

Unfortunately, there are some illness and defects that affect the functioning of the eyes, like blindness, nearsightedness, farsightedness, astigmatism, presbyopia, color blindness, cataract, conjunctivitis, glaucoma, etc. Many of them are treated with special crystals that improve vision, and others are treated with medicines.

To keep them healthy, is recommended to have a complete eye exam with dilated pupils. You may think your vision is fine or that your eyes are healthy, but the only way to be sure is to visit your eye doctor for an examination of the full eyes dilated.