Tear film dynamics during blinking and contact lens wear

We use a thin film model based on lubrication theory to describe the dynamics of the pre-lens tear film on a contact lens during blinking. During a blink, the upper eyelid drives motion of the contact lens. The motion of the lid and contact lens together influence the observed dynamics of the pre-lens tear film. We compare tear film dynamics with and without contact lens wear and also explore different types of voluntary and involuntary motion of the eye that can further influence the contact lens motion and tear film dynamics.