Discharge from the eyes can be watery or thick, and some conditions may cause a constant production of discharge. In some patients, treatment may help resolve the condition, but for others, the condition remains, causing continued problems, despite treating the symptoms. Understanding some of the causes for constant discharge from the eyes may help in treating the condition, or, at the least, easing symptoms.
Dry Eye
Dry eye often causes excessive tearing in the eyes. This results when the surface of the eye not having enough lubrication, either from low tear production or a poor quality of the tear film, states the University of Illinois at Chicago. The eye responds by sending a flood of tears, although this tear response only increases the problem. Not only do these response tears not have the layered quality the eye needs for nourishment, but the eye sends them in such abundance that the eye cannot hold them all. The tears run down the person's cheeks, often washing out some of the good, nourishing tears. Artificial tears, purchased over-the-counter in most retail stores, may offer relief for many people. Some people require punctal plugs, which are small inserts that block the tear ducts to prevent the nourishing tears from draining before the eye can use them. However, many people with dry eye continue to experience problems with the condition, including excessive tearing.
Allergies
Eye allergies result from the immune system's reaction to outside allergens, such as pollen or pet dander, explains the University of Michigan Kellogg Eye Center. In such cases, the eye often appears red and has constant tearing. Some people have a thick, mucous-like discharge in addition to the tearing. Eye allergies often respond to over-the-counter allergy eye drops. Some people, however, require a prescription strength allergy drop to relieve symptoms. Oral antihistamines or other oral allergy medications may also help improve eye discharge, redness and other symptoms. Without the presence of the allergens, the person will likely notice a decrease in drainage and other accompanying symptoms.
Conjunctivitis
An eye infection called conjunctivitis, also known as "pink eye," may cause the eyes to water, and will likely cause a thick, constant discharge, as well. This eye infection often results from the virus that causes the common cold. Bacteria and other conditions may also cause conjunctivitis. In addition to the discharge, many people experience redness and itching. At night, the constant discharge will often cause the eyelids to stick together, and then build up a crust on the eyelashes. To clean the dried discharge, dampen a washcloth with warm water and hold it against closed eyelids. The discharge will loosen for cleaning.
Infections from bacteria may respond to antibiotic eye drops. A viral infection does not have treatment and will need to resolve on its own, according to MayoClinic.com. However, a person with severe symptoms may require steroid eye drops to help ease symptoms, though this will not treat the infection itself.
