Cure for dry eye could be a blink away

The basic motion of tear film traversing the eye has been the focus of recent study. Dry eye -- a burning, gritty condition that can impair vision and damage the cornea -- is a common condition without a cure. Many causes, including the aging process, contribute to discomfort resulting from either a lack of tears or tears that evaporate too quickly. A treatment for dry eye could some day result from computer simulations that map the way tears move across the surface of the eye.