Tear Production Decrease - Causes, Treatment & When to See a Doctor

What is Tear Production Decrease?

Tear production decrease, often described as “dry eye,” is a condition in which the eyes do not make enough tears—or the tears produced are of poor quality—to keep the ocular surface properly lubricated. Tears are essential for maintaining clear vision, protecting the cornea from infection, and providing comfort. When tear volume or composition falls short, patients may experience irritation, visual disturbances, and an increased risk of corneal injury.

The condition can be temporary (e.g., after eye surgery) or chronic, lasting months to years. It is common in older adults but can affect anyone, including children.

Common Causes

Several medical, environmental, and lifestyle factors can reduce tear production or alter tear quality. The most frequent causes include:

• Age‑related tear‑gland atrophy – the lacrimal glands produce fewer tears as we get older.
• Meibomian gland dysfunction (MGD) – blockage of oil‑secreting glands leads to rapid tear evaporation.
• Autoimmune diseases – such as Sjögren’s syndrome, rheumatoid arthritis, and systemic lupus erythematosus, which attack the glands that make tears.
• Medications – antihistamines, beta‑blockers, diuretics, isotretinoin, antidepressants, and some chemotherapy agents can suppress tear secretion.
• Contact lens wear – long‑hour wear can disrupt the tear film and cause dryness.
• Environmental factors – low humidity, wind, air‑conditioned or heated indoor air, and prolonged screen time reduce blink rate and increase evaporation.
• Eye surgeries – LASIK, cataract removal, and cataract‑related procedures can temporarily impair corneal nerves that stimulate tear production.
• Blepharitis – chronic inflammation of the eyelid margins interferes with tear spread.
• Neurological disorders – Parkinson’s disease, facial nerve palsy, and trigeminal neuropathy can reduce blinking and tear output.
• Systemic dehydration – inadequate fluid intake or conditions causing fluid loss (e.g., fever, vomiting) diminish overall tear volume.

Associated Symptoms

Decreased tear production rarely occurs in isolation. Common accompanying signs and sensations include:

• Grittiness or a feeling of sand in the eyes.
• Burning, stinging, or itching.
• Redness, especially along the white of the eye (sclera).
• Blurred vision that improves after blinking.
• Excessive tearing (reflex tearing) as the eye attempts to compensate.
• Sensitivity to light (photophobia).
• Sticky eyelids upon waking.
• Difficulty wearing contact lenses.

In severe cases, the surface of the cornea may develop small abrasions (punctate epithelial erosions) or even ulceration, which can threaten vision.

When to See a Doctor

Most people can manage mild dryness with over‑the‑counter lubricants, but you should schedule an eye‑care appointment if you notice any of the following:

• Symptoms persist for more than a few weeks despite regular artificial tear use.
• Frequent eye redness, swelling, or discharge.
• Blurred vision that does not clear with blinking.
• Pain that feels sharp, deep, or throbbing rather than mild irritation.
• History of eye surgery, autoimmune disease, or medication that may affect tear production.
• Visible damage to the cornea (white patches, ulcers) noted by a professional.

Diagnosis

Eye specialists (optometrists or ophthalmologists) use a combination of history‑taking, physical examination, and specialised tests to assess tear production and quality.

History & Physical Exam

• Detailed questionnaire about symptoms, medication use, medical conditions, and environmental exposures.
• Observation of the eyelid margins, meibomian glands, and tear meniscus (the thin line of fluid at the edge of the lower eyelid).

Objective Tests

• Schirmer test – a thin strip of filter paper placed under the lower eyelid measures tear volume over five minutes.
• Break‑up time (BUT) test – fluorescein dye highlights how quickly the tear film fragments after a blink.
• Osmolarity testing – assesses tear concentration; high osmolarity is a hallmark of dry eye.
• Meibography – infrared imaging of the meibomian glands to detect blockage or loss.
• Corneal staining – special dyes (fluorescein, lissamine green) reveal epithelial damage.

These assessments help differentiate between aqueous‑deficient dry eye (low tear volume) and evaporative dry eye (poor lipid layer), guiding appropriate therapy.

Treatment Options

Treatment is individualized based on cause, severity, and patient lifestyle. It typically follows a step‑wise approach:

1. Environmental & Lifestyle Modifications

• Increase indoor humidity with a humidifier.
• Take regular breaks using the 20‑20‑20 rule (every 20 minutes, look at something 20 feet away for 20 seconds).
• Avoid direct airflow from fans, air‑conditioners, or heating vents.
• Stay well‑hydrated (≈2 L water per day unless contraindicated).
• Wear wrap‑around sunglasses outdoors to reduce wind exposure.

2. Over‑the‑Counter (OTC) Lubricants

• Preservative‑free artificial tears (e.g., Refresh Preservative‑Free, Systane Ultra) – use 4–6 times daily or as needed.
• Ointments or gels at bedtime for prolonged coverage.
• Thermal eyelid wipes or warm compresses to melt meibum in MGD.

3. Prescription Medications

• Cyclosporine A 0.05 % ophthalmic emulsion (Restasis) – reduces ocular surface inflammation and modestly increases tear production.
• Lifitegrast 5 % (Xiidra) – another anti‑inflammatory eyedrop approved for dry eye.
• Topical corticosteroids (short‑term) for severe inflammation under close supervision.
• Punctal plugs – tiny silicone or collagen devices inserted into tear drainage ducts to retain tears.
• Oral omega‑3 fatty acid supplements (e.g., 1000 mg EPA/DHA) have shown modest benefit in evaporative dry eye.

4. Procedural Interventions

• Meibomian gland expression – manual or thermal pulse therapy (e.g., LipiFlow) to unclog oil glands.
• Intense pulsed light (IPL) therapy – reduces inflammation and improves gland function.
• Autologous serum eye drops – used for severe cases unresponsive to conventional therapy.
• Amniotic membrane transplant – considered for refractory corneal epithelial defects.

5. Managing Underlying Systemic Disease

If an autoimmune condition such as Sjögren’s syndrome is identified, systemic treatment (e.g., hydroxychloroquine, biologics) in coordination with a rheumatologist is essential.

Prevention Tips

While some risk factors (age, genetics) cannot be changed, many habits can reduce the likelihood of developing or worsening tear‑production decrease:

• Maintain a balanced diet rich in omega‑3 fatty acids (fatty fish, flaxseed, walnuts).
• Limit or discuss with your physician the need for medications that dry the eyes.
• Practice good eyelid hygiene – gentle cleansing with diluted baby shampoo or commercial eyelid scrubs.
• Use protective eyewear during windy or dusty activities.
• Avoid smoking; tobacco smoke irritates the ocular surface.
• Schedule regular eye examinations, especially if you have risk factors such as diabetes, autoimmune disease, or a history of eye surgery.

Emergency Warning Signs

Seek immediate medical attention (emergency department or urgent ophthalmology) if you experience any of the following:

• Sudden, severe eye pain or a feeling of a foreign body that does not improve with blinking.
• Rapid loss of vision or double vision.
• Significant swelling, redness, and discharge suggestive of infection (e.g., conjunctivitis or keratitis).
• Visible white or hazy spots on the cornea (ulceration) confirmed by a professional.
• Light flashes, new-onset floaters, or a curtain‑like shadow across the visual field (possible retinal detachment).

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**References**

• Mayo Clinic. “Dry eye.” https://www.mayoclinic.org
• American Academy of Ophthalmology. “Dry Eye Syndrome.” https://www.aao.org
• National Eye Institute (NIH). “Dry Eye.” https://www.nei.nih.gov
• Cleveland Clinic. “Dry Eye Disease.” https://my.clevelandclinic.org
• WHO. “Global data on visual impairment.” 2022.