The tear film consists of three closely intertwined layers (or phases). The deep layer of mucin (or mucus), mainly secreted by the goblet cells, helps the tear film adhere to the surface of the cornea. The aqueous middle layer of the tear film is the thickest. It is mainly secreted by the lacrimal glands. In addition to water, it contains mainly nutrients, oxygen and germicidal substances. The surface layer of the tear film is secreted by the Meibomius glands. This lipidic phase has a stabilising function: it slows down the evaporation of the tear film.
VISMED is a patented solution providing a complex protective coating that helps lubricate the eye and protects it from environmental stress. Thanks to its viscoelastic and water retention properties, VISMED forms a stable film on the surface of the eye, which is only very slowly removed by blinking.