Dry eye or dry eye syndrome (DES) is a condition that appears when the eye produces a lower quantity of tears than normal.
The causes include the use of certain medication, other conditions, and damage to certain eye structures such as cornea or conjunctiva. Wearing contact lenses can cause dry eye syndrome. Pregnancy is another cause. Antihistamines, antidepressants, hormone medication, and blood pressure drugs can cause DES as well.
Allergies and conjunctivitis can also lead to dry eyes. Because there are so many causes only a medical professional can determine the exact one and prescribe an appropriate course of action.
Artificial tears or hypromellose eye drops are normally the first treatment because they alleviate the condition. Subsequent therapy will take into consideration the underlying conditions and causes. Controlling the environment, wearing glasses, medication, eye drops, or surgery may also be prescribed depending on the severity and cause.