Dry eyes, medically known as keratoconjunctivitis sicca, occurs when your tear ducts don’t provide adequate tears to effectively lubricate your eyes. This chronic condition usually stems from decreased tear production, increased tear evaporation, or an imbalance in tear composition.
Decreased Tear Production
You may develop dry eyes due to decreased tear production naturally as you age. But you can also have this uncomfortable condition due to:
Regularly staring at a computer screen (computer vision)
Chronic diseases, including diabetes and rheumatoid arthritis
Laser eye surgery
Tear gland damage
Dry eyes from decreased tear production can even be a side effect of certain medications, particularly allergy medications and decongestants. This is why it’s so important to discuss all medications – including over-the-counter varieties – with your optometrist at Limberg Eye Surgery.
Increased Tear Evaporation
Increased tear evaporation means that you probably have enough tears, but they don’t effectively lubricate your eyes. This can happen due to:
Wind, pollution, or dry air
Blinking less often
Eyelid problems
In some cases, increased tear evaporation can stem from both environmental and physical issues, like living in a dry climate and having eyelids that turn out (ectropion).
Imbalance In Tear Composition
Your tears are made from oil, water, and mucus. But if your oil glands (meibomian glands) become clogged, your tears might not have enough oil to adequately lubricate your eyes. In many cases, your optometrist can get to the root of a tear imbalance and correct the underlying issue, so you can start producing healthy tears.