There is a scientific consensus on the types of tears that exist: basal tears (Those which are constantly secreted to lubricate the eye), reflex tears (They are secreted by detecting foreign particles in the eyes) or psychic tears, Due to intense emotional states (sadness, happiness, anger …).
These three categories may seem simple, but they are not so much if we look at them from a scientific point of view and look at them from an aesthetic point of view.
the photograph Rose-Lynn Fisher he wondered what the different types of tears would look like under a microscope, depending on their origin. The result is called the topography of tears.
We can see that the basal tears draw an asymmetrical body.
Tears of peeled onions:
Tears from peeled onions look somewhat like leaves on trees. They create a very homogeneous design.
Tears from laughter:
The design of the tears that we expel when we laugh is a bit crazy.
Tears of grief and pain:
The drawing is, in this case, a disconcerting thing.
Part of the difference in the shapes that can be seen in tears under a microscope is the emotional state of the person who separated them. Depending on the state of the neuroendocrine system, different hormones and neurotransmitters will be secreted, the amount and type will depend on the molecular composition of the tears before they come out. In other words, because different moods follow different types of physiological processes, the bodily response they produce is also different.
On the other hand, the circumstances in which the tears have dried to become microscope samples (crystallized salt) also affect the shape of these structures.