Understanding the “Why” Behind Your Dry Eyes

If your eyes feel like they are filled with sand or look constantly bloodshot, you have likely realized that over the counter eye drops alone are not a permanent fix. To find relief, we have to look under the hood. Dry eye disease isn’t just one condition; it is a breakdown in a complex system.

Here are the three primary culprits behind the grit and irritation.

1. Aqueous Deficiency: the “water” problem

The bulk of your tear film is made up of a watery (aqueous) layer that is responsible for hydrating the eye and washing away debris.

What’s happening?: Your glands simply are not “turning on the tap” enough.

Common triggers: Hormones, age, autoimmune diseases and other systemic conditions, medication, dehydration, lifestyle considerations.

2. Evaporative Dry Eye: The “oil” problem

This is actually the most common cause of dry eye disease (86%). Your tears have a thin outer layer of oil (lipids) that acts like a lid on a pot of boiling water and prevents the moisture from evaporating.

What’s happening?: Small glands in your eyelids, called Meibomian glands, get clogged or produce poor quality oil. Without that protective oily seal, your tears evaporate into thin air seconds after you blink.

The irony: This is why your eyes might actually “water” excessively; they are overcompensating for the lack of oil by producing more low quality water to protect the surface of your eyes.

3. Inflammation: The “Environmental and Systemic” problem

Sometimes, dry eye is not about the meibomian glands themselves, but the “biologic weather” surrounding them. Chronic inflammation creates a viscous cycle that damages the ocular surface.

Systemic Issues: Conditions like rosacea, Sjogren’s syndrome, rheumatoid arthritis, hormone related disease,as well as many others, can cause body-wide inflammation that hits the eyes hard.

Medications and Environment: Antihistamines, blood pressure meds, and antidepressants are just a few that can dry you out. Add in long hours of “screen time” (which reduces your blink rate), dry AC air, ceiling fans, lack of sleep, and you have a recipe for chronic inflammation.

The Bottom Line:

Treating chronic dry eye is about more than just adding “fake tears” . It’s about replenishing the water, restoring the oil, and calming the inflammation.

At the Beckman Dry Eye Institute in Franklin, TN, Dr. Beckman will perform the specific and advanced diagnostic tests for each layer of the tear film that are necessary to determine the underlying cause for your dry eye disease.

The root cause is often a complex combination of unique issues that are contributing factors. Dr. Beckman will then empower you with a clear explanation so you understand your chronic disease. Together you will develop your personalized treatment plan.