Understanding Dry Eye Syndrome
Dry eye syndrome is a common ocular condition that occurs when the tear film is insufficient to keep the surface of the eye lubricated, leading to dryness and discomfort. The causes of dry eye can be categorized into two main groups:
Aging
Lacrimal gland damage due to inflammation or trauma
Symptoms of autoimmune diseases
e.g., Rheumatoid arthritis, Sjögren’s syndrome
Use of certain medications
e.g., Antihypertensives, Antidepressants
Eye-related surgery
Environmental factors: Prolonged exposure to high winds, heavy smoke, high temperatures, or dry air.
Meibomian Gland Dysfunction (MGD) or insufficient secretion.
Incomplete eyelid closure.
Reduced blink rate:
e.g., Prolonged driving, reading, or excessive screen time.
The tear film is a fluid membrane that covers the surface of the eye. It consists of three layers: the oil layer, the aqueous layer, and the mucin layer, each secreted by different glands around the eyes.
*Any dysfunction in the eye surface or these glands can potentially lead to dry eye syndrome.
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The tear film consists of three layers: the lipid (oil) layer, the aqueous (water) layer, and the mucin layer.
The lipid layer is secreted by the meibomian glands. When meibomian gland dysfunction (MGD) or blockage occurs, the tear film’s ability to retain moisture significantly decreases. This often leads to a persistent feeling of dryness where eye drops seem to provide little to no relief.
*Click to enlarge
Process
Dryness, redness, and aching, eyesIncreased stringy mucus discharge around the eyes.
Stinging, burning, or itching sensations，Frequent foreign body sensation.
Temporary blurred vision and photophobia (light sensitivity)
Paradoxical watering (reflex tearing) due to underlying dryness
When consulting an ophthalmologist for dry eye issues, the doctor will typically begin by reviewing your medical history and assessing the severity of your symptoms. This information is crucial in helping the physician make an accurate diagnosis.
How long have your symptoms persisted?
Do you have any systemic diseases? (e.g., Rheumatoid Arthritis, Thyroid disorders, etc.)
What is your current eye drop regimen? (It is recommended to bring your current medications with you.)
Do you regularly wear contact lenses?
It is primarily used to evaluate the severity of symptoms and their impact on daily life.
Fluorescein dye is used to temporarily stain the ocular surface to visualize the extent of epithelial defects. This helps clinicians assess the severity of dry eye disease.
Imaging examinations, such as the lipid layer interferometry (e.g., LipiView), can evaluate the lipid secretion within the tear film and detect abnormalities or dysfunction in the Meibomian glands.
Dry eye disease is a common ophthalmic condition that occurs when the tear film is insufficient to keep the ocular surface lubricated, leading to dryness and discomfort. The causes of dry eye can be categorized into two main types:
There are various pharmacological treatments available, including artificial tears, anti-inflammatory drugs, antibiotics, and autologous serum. The physician will select the most appropriate treatment modality based on the underlying cause and the severity of the patient's condition.
Enhance eyelid hygiene and perform warm compresses. Warm compresses are particularly important, as regular application helps liquefy and express the oils from the meibomian glands.
Using light energy to dissolve deep-seated oil blockages, thereby improving natural lipid secretion and achieving a self-sustaining moisturizing effect.
Close your eyes for 2 seconds, squeeze them shut for another 2 seconds, and then open them for 2 seconds. Repeat this sequence at least 3 to 5 times daily.
Applying a warm towel compress to the eyelids for 12 minutes can help the glands around the eyes secrete oils more efficiently. This is especially effective for patients who also suffer from blepharitis.
Cleanse your eyelids with a mild, diluted baby shampoo or a specialized eyelid cleanser to prevent the accumulation of excess oils, dust, and bacteria.
Increasing sleep duration, reducing the frequency of smoking and alcohol consumption, and maintaining physical and mental well-being are essential. Good lifestyle habits will significantly contribute to the improvement of dry eye symptoms.
Research indicates that deficiencies in Vitamins A and D are linked to the development of dry eye disease. It is recommended to supplement these nutrients through diet or health supplements.
The best sources include salmon, tuna, and sardines. Plant-based Omega-3 options are also available, such as nuts, vegetable oils, soy milk, and other soy products.
