Excessive tearing is annoying, irritating, and also blurs our vision. People might ask why we're crying. Did you know our eyes can produce an overabundance of tears for several reasons?
Tearing generally serves as a protective mechanism. When the surface of our eyes are irritated, corneal nerves send an impulse to the brain which triggers "reflex tearing." This causes our lacrimal gland to release thin, watery tears which far exceeds the normal output of our tears. Additionally our natural/baseline tearing has a longer-lasting, more robust composition. So what can irritate our corneal nerves and activate excessive tearing?
Allergies - being around allergens like pollen, pet dander, and dust cause the inside surface of our eyelids to become irritated. Small bumps called papillae form. These papillae constantly rub the front surface of our eye, irritating our cornea. Our eyes tear up in an attempt to flush away allergens. This is the same reason why chopping onions causes tearing; our eyes are trying to flush out an irritating substance.
Dry eye - it may sound like a paradox, but excess tearing can be a symptom of dry eye disease. Rather, excessive tearing is in response to excessive ocular surface dryness. Dry eye can have numerous causes including prolonged computer work/reading, age, gender, and is a side-effect of a variety of prescription medications. Increased tearing is a mechanism used by the eye to hydrate itself. Usually our eyes consistently produce a baseline tear, which is composed of mucus, lipids, and an aqueous component. When this baseline tear is not enough, that's when our lacrimal gland is triggered and "the floodgates open." If tearing occurs mainly when reading, using the computer for an extended period, or being outside in dry, windy conditions. . .dry eye may be the underlying cause
Emotional - in this category of tearing, we know why we are crying. . .stress, grief, or joy can elicit this reaction. This tearing obviously does not involve irritated corneal nerves or ocular health.
If your eyes tear up excessively on a regular basis, dry eye and/or allergies may be to blame. Advanced Eye Care Center helps many patients overcome ocular allergies and provide the latest technology for patients struggling with dry eye. Dr. Ballitch and Dr. Finn can help! Please call us at 419-521-3937 to get started today!
