What causes dry eye?

San Diego eye doctor

Dry eye is a common condition, and it can be uncomfortable for many sufferers. What causes dry eye? How can this problem be treated?

What are tears made of?

Though tears are made up primarily of liquid (a solution of salts dissolved in water), there is also a lipid (fat) component that helps to prevent tears from evaporating too quickly, and a mucus component that helps to spread tears out over the surface of the eye. Deficiencies of any of these...Read More