Many people occasionally experience dry, irritated, or tired eyes. But when these symptoms become frequent or persistent, there may be more going on than simply needing eye drops.
Ocular surface disease is a broad term used to describe problems affecting the surface of the eye, including the tear film, eyelids, and meibomian glands. Dry eye disease is one of the most common forms.
Your Tears Do More Than You Think
A healthy tear film does much more than keep your eyes feeling comfortable. It helps maintain a smooth optical surface for clear vision, protects the eye from the environment, and nourishes the front surface of the eye.
For the tear film to work properly, several components must work together. Your eyes need enough tears, but those tears also need the right balance of water, oils, and mucus.
When that balance is disrupted, tears may evaporate too quickly or fail to adequately protect the surface of the eye.
Common Symptoms of Ocular Surface Disease
Ocular surface disease can feel different from person to person. Common symptoms include:
Dryness or a gritty sensation
Burning or stinging
Redness
Excessive tearing or watery eyes
Blurry or fluctuating vision
Sensitivity to light
Eye fatigue, especially while reading or using a computer
One surprising symptom is excessive tearing. When the surface of the eye becomes irritated, the eyes may produce a sudden overflow of tears. Unfortunately, these reflex tears may not have the right composition to provide long-lasting comfort.
The Role of the Eyelids and Meibomian Glands
For many patients, dry eye is not simply a problem of producing too few tears.
Tiny oil-producing glands called meibomian glands line the edges of the eyelids. These glands produce an important oily layer that helps prevent tears from evaporating too quickly.
When these glands become blocked or do not function properly—a condition called meibomian gland dysfunction—the tear film can become unstable. This is one reason someone may use artificial tears frequently but still experience ongoing symptoms.
What Can Contribute to Ocular Surface Disease?
There is rarely just one cause. Several factors can contribute, including:
Aging
Extended screen time and reduced blinking
Dry, windy, or air-conditioned environments
Contact lens wear
Certain medications
Eyelid or meibomian gland problems
Inflammation of the eye's surface
Certain systemic health conditions
Because there can be multiple contributing factors, successful treatment often begins with identifying what is affecting the ocular surface in the first place.
Choosing an Over-the-Counter Eye Drop
Walking down the eye drop aisle can be overwhelming. Many products are marketed for dry, red, or irritated eyes, but they do not all work the same way.
Artificial tears are designed to supplement and support your natural tear film. Some are thinner and provide quick relief, while thicker drops or gels may provide longer-lasting lubrication.
Preservative-free drops can be a good option for people who use artificial tears frequently or have sensitive eyes. Preservatives help keep multi-dose bottles sterile, but frequent exposure can sometimes irritate an already sensitive ocular surface.
Some artificial tears also contain lipid or oil-based ingredients designed to support the oily layer of the tear film. These may be particularly helpful when tears are evaporating too quickly due to meibomian gland dysfunction.
It's also important to understand that redness-relieving drops are not the same as lubricating drops. Many redness relievers work by temporarily constricting blood vessels on the surface of the eye. While they may make the eyes look less red for a short time, they do not address the underlying cause of dryness or irritation and may not be appropriate for regular use.
The best type of over-the-counter drop depends on what is causing your symptoms. More expensive does not necessarily mean better, and the drop that works well for one person may not be the best choice for another.
Beyond Artificial Tears: Other Treatment Options
Over-the-counter drops can be an important part of managing ocular surface disease, but they are not the only treatment option.
Depending on the cause and severity of your symptoms, treatment may also include eyelid hygiene, warm compresses, prescription medications to address inflammation, treatments designed to improve tear production, or therapies focused on the meibomian glands and eyelids.
There is no one-size-fits-all treatment for dry eye and ocular surface disease. The right approach depends on what is happening with your individual tear film and ocular surface.
We'll explore these treatment options and medications in more detail in a future post.
Why a Comprehensive Eye Examination Matters
Ocular surface disease is not always obvious. Some patients have significant symptoms with relatively subtle clinical findings, while others may have noticeable changes to the ocular surface without realizing how much it is affecting their comfort or vision.
During an eye examination, we can evaluate the health of your tears, eyelids, and ocular surface to look for signs that may be contributing to your symptoms.
Treatment is individualized and may include changes to your environment or daily habits, lubricating drops, eyelid care, or other treatments depending on the underlying cause.
Don't Just Live With Uncomfortable Eyes
Occasional dryness can happen to anyone. But persistent irritation, fluctuating vision, redness, or excessive tearing are worth discussing during your eye examination.
Your eyes should feel comfortable—not like something you simply have to manage throughout the day.
At Pacific View Optometry, we evaluate the whole ocular surface to help identify what may be contributing to your symptoms and develop an approach that fits your individual needs.