Every time you blink, a thin liquid film is left behind on the surface of your eye; it's purpose is to protect the cornea, provide a smooth surface for vision, remove debris and more. We develop a hierarchy of models for the tear film that incorporates the movement of the lids over a blink cycle: closing, opening, remaining open and repeating. Lubrication theory is used to develop model equations for the tear film. Numerical results are presented for simplified lid motion. The results show that based solely on fluid dyanmics considerations, the lids need not close fully in order to achieve the same effect as a complete blink.