When was the last time you cried? No need to be ashamed to admit it, because crying is not a weakness. Let's look at the facts about the tear miracle that needs to be known.
The tears that many people assume as salt water that comes out when crying are actually very special fluids, which is the most effective disinfectant. The first task is to protect the eyes from microbes, enzyme "lysozyme" in it is able to destroy various kinds of bacteria and to kill microbes. The eye is protected from infection via lysozyme. This substance is even more effective than a powerful germicide which is used to clean the building of microbes.
According to Dr William Frey, biochemist and director of the Minnesota Dry Eyes and Tears Research Center, crying can make a person feel better because the tears that come out function to remove the nerves in the body, one of which is stress. And the tear is the only thing that can offer the stress poison. In addition, crying can also increase the supply of oxygen to the cornea, for lubrication of palpebra fracture (the tissue that protects the eyeball) with the cornea and to lower the level of depression, because by crying can improve the mood again.
Then in the eye there is also a lubrication system, this system prevents eyes that change direction in four different directions for hundreds of times, from damage caused by these movements.
And how can such an effective germicidal do no harm to the eye and instead protect it perfectly? this is the height of artwork created by ALLAH. Tears were created in a very precise way and related to their chemical structure.