Melbourne Nov 23: If you are not comfortable wearing contact lenses it could be due to degradation of the lipid layer in the eyes' natural tear film says a study. Patients with discomfort showed degradation of the lipid layer after a few hours of wearing contact lenses the researchers found. The tear film is a three-layered 'sandwich' of fluids that nourishes and protects the eyes. The lipid layer is the tear film's outermost layer which is composed of fat- and wax-like molecules called lipids. It performs an important barrier function in preventing evaporation of tears and maintaining stability of the
