Dry eye is among the most common reasons people see an ophthalmologist, and among the most frequently dismissed — by patients, who assume it is just something to put up with, and sometimes by the drugstore aisle, which offers a wall of drops without any way to know which one you actually need.

It is a real medical condition. Left untreated it damages the surface of the eye, blurs vision, and makes reading, driving, and screen work genuinely uncomfortable. It is also very treatable once the cause is properly identified.

The counterintuitive part: watery eyes

Patients regularly tell us their eyes water constantly and are baffled to be told the problem is dryness.

Here is why. Your eyes produce two kinds of tears — a steady basal layer that keeps the surface healthy, and a flood of reflex tears when the eye is irritated. When the basal film breaks down, the surface becomes irritated, and the eye responds with reflex tearing. Those reflex tears are mostly water; they lack the oil and mucus that let a tear film stay put. They run down your cheek rather than coating the eye.

So the eye is simultaneously watering and dry. Treating the underlying dryness is what stops the watering.

What it feels like

Burning, stinging, or a persistent gritty feeling, as if something is in the eye
Watering, often outdoors, in wind, or in air conditioning
Vision that blurs and then clears when you blink — a very characteristic sign
Eyes that feel heavy or tired by mid-afternoon, particularly after screen work
Redness
Difficulty tolerating contact lenses that used to be comfortable
Symptoms worse in the morning, or worse at night, depending on the type

Fluctuating vision deserves particular mention. Patients often assume their glasses prescription is wrong when in fact an unstable tear film is scattering light between blinks. It is a common and easily missed cause of "my new glasses aren't right," and worth raising at your comprehensive eye exam.

Why it happens

Age, because tear production declines. Sex and hormones — dry eye is substantially more common in women, particularly after menopause.

Meibomian gland dysfunction is the most common cause overall and the most commonly missed. Small glands along the eyelid margin produce the oil that stops your tears evaporating. When they become blocked or inflamed, tears evaporate within seconds of blinking. The eye is producing enough tears; they simply are not lasting.

Screens. Blink rate drops dramatically during concentrated work, leaving the surface exposed far longer than it should be.

Medications — antihistamines, decongestants, antidepressants, beta blockers, diuretics, and some blood pressure medications all contribute. Bring your list.

Medical conditions including rheumatoid arthritis, Sjögren's syndrome, thyroid disease, and diabetes.

Environment. Wind, air conditioning, ceiling fans, and low humidity all accelerate evaporation — and coastal living with the AC running much of the year is not gentle on a marginal tear film.

Previous eye surgery, including cataract surgery and refractive procedures, can cause temporary dryness. Growths on the eye surface such as a pterygium disrupt the tear film in a similar way.

How we evaluate it

Diagnosis matters here more than it might seem, because the treatment for reduced tear production is different from the treatment for excessive evaporation, and using the wrong one is why so many people conclude that "drops don't work for me."

We examine the surface of the eye and the tear film under the slit lamp, assess how quickly the film breaks up after a blink, examine the eyelid margins and meibomian glands specifically, and use dyes that reveal damage to the surface not otherwise visible. We will also review your medications and medical history, which frequently explains a great deal.

Treatment

Artificial tears, chosen deliberately rather than at random. If you use drops more than four times a day, use preservative-free ones — the preservatives themselves become irritating with frequent use. Thicker gels and ointments at night help overnight dryness.

Eyelid hygiene and warm compresses, which are the mainstay for meibomian gland dysfunction. Sustained warmth followed by gentle massage helps liquefy and express the oil. It needs doing consistently for weeks before judging it, which is where most people give up too early.

Prescription anti-inflammatory drops, which address the inflammation underlying chronic dry eye rather than just lubricating over it. These take time — often several weeks to months — and need explaining, or people abandon them.

Punctal plugs, tiny inserts that partially block tear drainage so your own tears remain on the eye longer. Placed in the office in a few minutes.

Addressing contributors — adjusting a medication in consultation with your prescribing physician, screen habits, humidifiers, avoiding direct fan and vent airflow, and omega-3 intake.

What to expect

Dry eye is usually managed rather than cured, and improvement tends to be gradual. Most people notice meaningful change over weeks, not days — which is worth knowing in advance, because the single most common reason treatment fails is that it was stopped too soon.

It is also worth saying that dry eye occasionally points at something systemic that has not yet been diagnosed. If your history suggests it, we will say so and help you get that looked into.

Dry Eye Diagnosis & Treatment in Bluffton & Hilton Head