The Eye

What a marvellous sense ability which we have, called the 'vision' or 'sight'. That is the ability to see the world around us. And the eye makes it all possible. The eye is sometimes described as the outwardly visible part of our brain. Each waking second the eye sends some one billion pieces of fresh information to the brain. The human eye can sense some ten million gradations of light and seven million different shades of colour. Eyes are responsible for about 75% of all that we perceive. Few creatures could boast of eyesight as powerful as a man's. An Astronaut orbiting the Earth could spot the Pyramids of Egypt.

Today I have learned that there is a part of the human body that receives most of the oxygen directly from the atmosphere rather than from blood!! What a wonder!! The 'cornea' in the eye receives most of its oxygen directly from the atmosphere through tears! If it were to be from the blood that would diminish the transparency of the cornea...

In 1957, intrigued by the dual purpose of tears [irritant tears and emotional tears], chemist Robert Brunish analyzed the ingredients of irritant and emotional tears.. Tears induced by onion fumes and strong wind, he discovered, contained a lower concentration of the protein albumin. In the 1970s the biochemist William Frey began investigating whether this protein was related to the chemical changes in our bloodstream caused by stress. Tears might well play a role in filtering out the body's stressful chemicals. The machismo ethic of suppressing tears, Frey thinks, might induce peptic ulcers and other stress-related diseases. By not allowing himself to weep, the strong, silent male might not take advantage of natural relief. Guys, don't hold back your tears... let it flow naturally.