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Can tears detoxify? What are the benefits and effects of tears

Children love to cry most, but when they cry, adults always use various methods to stop them immediately. In fact, tears also have many advantages. The following is a specific introduction:

1. Flushing and dilution

When the eyes narrow into dust or collapse into foreign bodies, a large number of tears will be secreted from the lacrimal gland, just like the 'wiper' on the front glass window of the car, which plays the role of flushing and dilution to protect the cornea and conjunctiva from damage.

2. Lubrication

Tears form a smooth liquid film with a thickness of 6 μ m ~ 7 μ m on the corneal surface. It can not only keep the eye surface moist, smooth the contact between the eyelid and the eye, and make the eye rotate flexibly, but also make the corneal surface more smooth and delicate, so as to reduce astigmatism and improve its optical properties.

3. Bactericidal action

The pH value of tear is between 6.5-7.5. It contains a variety of special bactericidal substances - lysozyme, which can destroy the cell wall of bacteria and make bacteria dissolve and die. In addition, tears also contain lactoferrin and immunoglobulin, which have antibacterial and bacteriostatic effects.