Stability Analysis of the Evaporation of a Tear Film over a Contact Lens

The aim of this paper is to analyes the stability of a system of flow and evaporation liquid of tear film throw the pre-lens tear film (PrLTF) of contact lens in eye porous layer which infected by dry-eye (dry eye syndrome) and this analysis was done by using Galerkin method which enables to find disturbance growth from its nonexistence after making the system linearization we find the parameters which affect the increase of the density of tear film and as a result reduces the evaporation operation that cause this disease.