Dry Eye Syndrome: Symptoms, Diagnosis and Management
Understand dry eye syndrome, including watery eyes, common symptoms, what happens at an eye exam and how findings guide treatment.
Dry eye syndrome, also called dry eye disease, happens when your eyes do not make enough tears or the tears do not keep the eye’s surface properly moist. Tears may evaporate too quickly or fail to spread and work normally. The result can be discomfort and blurred vision—not just a feeling of dryness. National Eye Institute
The useful next step is to establish whether dry eye explains your symptoms and what is disrupting your tears. That is why an eye exam matters when symptoms persist: relief and treatment of the underlying problem are not always the same thing.
What dry eye can feel like
Common symptoms include:
- Burning or stinging.
- A gritty, scratchy feeling, as though something is in the eye.
- Redness or irritation, especially around wind or smoke.
- Blurred vision, particularly during reading.
- Contact lenses becoming uncomfortable.
- Unexpectedly watery eyes.
Watering does not rule out dry eye. Irritation from dryness can trigger extra tears as a reflex, even though the usual tear film—the thin coating spread across the eye with each blink—is not working well. These symptoms are clues, not a diagnosis. American Academy of Ophthalmology
Do not assume urgent symptoms are dry eye. Seek same-day eye care for eye pain, new light sensitivity or sudden vision changes, and for a red eye while wearing contact lenses. If you have sudden vision loss, it hurts to look at light, or your eye is injured, seek emergency assessment immediately. NHS guidance
Why it happens
Tears need both enough fluid and a stable surface coating. Oil from the meibomian glands, the small oil-producing glands in your eyelids, helps slow evaporation. If those glands become blocked or do not work properly, tears can dry out too quickly. Other people produce too little tear fluid. American Academy of Ophthalmology
Aging, eyelid problems, contact lenses, some medicines and conditions such as Sjögren’s syndrome can contribute. Screens and dry or windy surroundings can also make symptoms worse. For a fuller explanation, see what can disrupt your tears. Do not stop a prescribed medicine because you suspect it is causing dryness; discuss it with the prescriber. NHS
How dry eye is diagnosed
An optometrist or ophthalmologist can assess dry eye through your history and an eye examination. They may look at the eye’s surface, eyelids and how you blink, then use tests to investigate tear quantity or quality. American Academy of Ophthalmology
Depending on the findings, testing may include:
| Check | What it helps assess |
|---|---|
| Eyelid and blink examination | Whether the lids and blinking support a healthy tear film. |
| Tear breakup time | How long the tear coating remains stable before it breaks up. |
| Surface staining with special dyes | Patterns of disturbance on the eye’s surface. |
| Schirmer test | Tear production, measured using small paper strips under the lower eyelids. |
| Tear osmolarity | The concentration of dissolved particles in tears. |
These are possible tests, not a checklist every patient must receive. The examination helps identify the cause and choose treatment rather than relying on symptoms alone. Mayo Clinic
How management follows the findings
For mild symptoms, lubricating drops and environmental changes may help. Artificial tears add lubrication; screen breaks, less exposure to drying airflow and a humidifier may reduce aggravating conditions. If contacts are uncomfortable, take them out and use glasses to rest your eyes. See our guide to choosing eye drops for dry eyes for formulation and contact-lens checks. National Eye Institute, NHS
Underlying eyelid or gland problems need attention too. An eye professional may recommend warm compresses, eyelid cleaning or other treatment aimed at improving oil flow and reducing inflammation. Lubricating drops can provide comfort without resolving those problems. American Academy of Ophthalmology
Persistent or more serious disease may need prescription treatment or procedures. Options include medicines that reduce inflammation or support tear production, and punctal plugs that retain tears by blocking drainage openings. The choice depends on the cause and examination findings—not simply which drop feels strongest. Our guide to treatment for severe eye dryness explains those next steps. American Academy of Ophthalmology
Book an eye exam if symptoms persist despite a few weeks of home care, worsen or interfere with reading, work or other daily activities. Bring a list of medicines and eye drops, and note when symptoms occur. Useful questions are: What is disrupting my tears? Is the eye’s surface affected? When should we reassess the treatment? NHS, American Academy of Ophthalmology
This article provides general information, not an individual diagnosis or treatment plan.