To better understand what happens to your eyes, it is worth first understanding how the eyes work. Tear fluid is secreted by the tear ducts and contains common salt, glucose and protein. It is spread evenly over the eyes with every blink of your eyelids and produces a thin film of tear fluid. This film has several tasks: it rinses out foreign particles and serves as a lubricant to ensure that your eyelids glide over your eyes. In addition, tear fluid ensures that the cornea is evenly moistened and supplies your eyes with oxygen and nutritional substances.
There are two potential reasons why the eyes may be incompletely covered with the tear film: either the tear ducts are not producing enough fluid, or the composition of the tear fluid changes. Although the term "dry eyes" is well-known and commonly used, today doctors speak of an eye moisture disturbance.
For both forms of the problem, so-called "artificial tears" from a pharmacy provide the best solution. Artificial tears come in the form of drops or gel and are intended to work as a replacement for tears. They are either applied as drops into the lower conjunctival sac or carefully rubbed in. Then you close your eyes and roll them in order to evenly distribute the active substances. But be careful: using them for a long period of time or very frequently can cause your eyes to produce less tear fluid. Therefore, it is very important to speak with an eye care professional about the possible causes of your condition and how to remedy them.
If a local treatment does not help, then as a last resort there is always the option of a minor operation.