The primary function of lipid-based eye drops is to replenish and stabilize the [lipid layer]() of the tear film. The tear film consists of three layers: the lipid layer, aqueous layer, and mucin layer. The lipid layer, being the outermost layer, reduces evaporation by acting as a barrier. These drops contain lipids that mimic natural tear lipids, thereby restoring the integrity of the tear film and alleviating symptoms of [dry eye syndrome]().
