What are the main causes of dry eye?
The two main causes of dry eye disease are inadequate tear production and poor tear quality. Tear production can be affected by age, the environment, certain medications, digital device use, contact lens wear, ongoing health conditions, and previous eye surgery. Tears are made of water, oil, and mucus. Each must be present and in balance to produce tears that effectively nourish the eye and don’t evaporate too quickly.