What is dry eye?

It is the result of tear secretion and eyelid disorders that can cause redness, itching, burning, the sensation of a foreign body in the eye and eyestrain. Proper lubrication of the eye is achieved with a correct balance of good-quality tear production and the normal functioning of the eyelids. When this balance is broken or altered by external factors, tear production decreases, and there is a propensity for dry eye to develop.