What is artificial tear fluid?
Artificial tear fluid is a substance that is approximately the same in composition as the body’s own tear fluid and is used to replace the body’s own tear fluid. This may be necessary if the body’s own tear fluid is not available in sufficient quantity to fulfil its tasks. In this case, artificial tears must be added to protect the eye from infection and to avoid irritation.
These products are also called tear substitutes. They always contain water and fats (lipids), which form a kind of protective film and prevent the water from evaporating immediately. In addition, they often contain sugar (glucose), salts and proteins.
Furthermore, many artificial tear fluids contain hyaluronic acid. This binds water and thus ensures that the eye is moistened. Preservatives are another additive that is often found.
However, they can further irritate the eyes. Artificial tear fluid can be found in various forms of application, e.g. as sprays, drops or gels. They are all applied to the eye from the outside or into the eye. Which form of application is most suitable depends on the frequency of use, but also on individual preferences. Here you can also find information on the topic: Disease of the lacrimal ducts
