What is abrasion?

What Does abrasion Mean

Derived from the Latin word abradĕre , the notion of abrasion is linked to the fact and consequence of fraying or wearing through friction . In the field of medicine, abrasion is a concept that refers to the almost superficial injury or ulcer of the epithelium or mucous membranes due to trauma or a burn. Also, according to its meaning, it describes the irritating power of energetic purgatives.

The corneal abrasion , to cite a concrete example, consists of a scratch, injury or a given lesion affecting the cornea (ie, transparent surface covering the front of the eye), which can be caused by abrupt contact with a nail or a sharp object, by contact lenses or from the entry of a foreign body into the eye (such as dirt, dust or sand).

Among the most common symptoms experienced by a person suffering from a corneal abrasion are tearing, redness of the eye, blurred vision, headache, pain when opening and closing the eyes or the sensation of having a body. strange in said eye.
Those who have these symptoms should, of course, go to a specialized health professional such as the ophthalmologist so that he can carry out the corresponding examination and analysis. In this sense, the most common is that said doctor, to properly diagnose said abrasion, chooses to perform a test that is called fluorescence staining.
This test consists of or is based on the use of what is a blue light, which is what allows to determine the damage to the aforementioned cornea, and an orange-colored ink which is what is called fluorescein.
Once said damage to the eye has been diagnosed, the doctor will assess its severity and, based on it, will establish one treatment or another. Thus, for example, you can carry out the prescription of antibiotic drops or ointments of various types to reduce both inflammation and to reduce the risk of scarring.
In the same way, you can also choose to put a patch on the affected person and recommend the use of sunglasses to protect the eye for a certain time. However, it must be emphasized that when it is a minor abrasion, it can heal on its own.
For geology , abrasion refers to a process marked by considerable wear or destruction caused on the Earth's surface when external agents tear off fragments of matter .
The marine abrasion , moreover, identifies the wear suffered rocks due to the mechanical action of water, which draws particles accumulated from successive washouts. This process affects the formation of steep coasts.
In addition to those mentioned, one can cite glacial abrasion , which is characterized by leaving the glacier beds eroded, a process that is triggered by the presence of solid materials carried by the ice. The fine grains, which are known generically by the name of glacial flour, generate a glacial polish in the rock of the riverbed.

As you may have seen, the concept of abrasion is closely related to that of erosion , which is based on a procedure of subtraction or wear of the mother rock from exogenous geological processes, such as the action of living beings, wind, water or temperature changes, among others.

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