Evidence of our Creator is all around us—from the miracle of the atom’s intricate internal structure, to the design of the most complex piece of matter in the universe, the human brain. Scientists have found God’s greatness even in one of the most minute phenomena—human tears.
Biochemist William Frey spent many years as head of a research team studying tears. The team found that, although tear production organs were once thought to be vestigial (left over from evolution) and no longer necessary for survival, tears actually have numerous critical functions.
Emotional tears are a response which only humans have, for only people can weep. All animals that live in air produce tears to lubricate their eyes. But only people possess the marvellous system that causes crying.
Tears are secreted by your lacrimals—tiny, sponge-like glands which rest above the eye against the eye socket. The average person blinks every two to ten seconds. With every blink, the eyelid carries this miracle fluid over your eye’s surface.
One of the most obvious functions of tears is to lubricate your eyeball and eyelid, but they also prevent dehydration of your various mucous membranes—and anyone with the ‘dry eye’ problem knows how painful this can be. A severe lack of this lubrication produces a condition requiring medication or therapy to save the victim’s eyesight. A thin layer of oil on the exposed eye reduces evaporation of tears, keeping eye tissue moist and soft. This oil is produced in your Meibomian glands located in the eyelids.
Another important function of tears is that they bathe your eyes in lysozyme, one of the most effective antibacterial and antiviral agents known. Lysozyme, from lysos, to split, and enzyme (it is an enzyme which chemically splits certain compounds) is the major source of the antigerm traits of tears. Amazingly, lysozyme inactivates 90 to 95 per cent of all bacteria in a mere five to 10 minutes. Without it, eye infections would soon cause most victims to go blind.