Meibomian Gland Dysfunction: Understanding the Root Cause of Most Dry Eye Cases

Patients with MGD commonly experience a range of issues that impact their daily comfort and vision. Many patients describe a sandy or gritty feeling, as if something is stuck in their eye. Others experience burning, stinging, or a general feeling of soreness that persists throughout the day.

• Blurry or fluctuating vision that temporarily improves after blinking or using artificial tears
• Redness of the eyes, especially along the edges of the eyelids where the glands are located
• Increased sensitivity to light, also called photophobia, which can make it uncomfortable to be outdoors or in brightly lit spaces
• Difficulty with nighttime driving due to glare, halos around lights, or general visual disturbances
• Eye fatigue, especially during activities that require sustained focus such as reading, computer work, or watching television
• Discomfort when wearing contact lenses, or an inability to wear lenses for as long as you used to
• A sensation of heaviness or tiredness in the eyelids

It sounds contradictory, but excessive watering is a classic sign of evaporative dry eye caused by MGD. When the surface of your eye becomes too dry and irritated, it sends a distress signal to your brain, which responds by flooding the eye with emergency reflex tears. However, these reflex tears are mostly water and lack the crucial oil layer needed to prevent evaporation.

As a result, these watery tears do not effectively lubricate your eyes. They often just run down your cheek, leaving the underlying dryness unresolved. This is why some patients with severe dry eye also experience chronic tearing.

Many patients notice that their symptoms fluctuate based on environmental conditions and activities. Symptoms often worsen in air-conditioned spaces, during prolonged screen time, in windy conditions, or during activities that reduce your blink rate. Some patients also notice their symptoms are worse in the morning upon waking or later in the day as eye fatigue sets in.

This is the cornerstone of all MGD management plans and focuses on daily habits to improve gland function and reduce environmental stress on your eyes. Targeted warm compresses using a specialized heated eye mask that maintains a therapeutic temperature for 10 to 15 minutes is crucial for melting the hardened oil within the glands. Daily eyelid hygiene using a dedicated product like pre-moistened lid scrubs or hypochlorous acid spray is essential to remove bacteria, debris, and inflammatory agents from the eyelid margins.

• Blink training: Making a conscious effort to perform full, deliberate blinks frequently, especially during screen use. Remember the 20-20-20 rule, which means every 20 minutes, look at something 20 feet away for at least 20 seconds.
• Nutritional support: A diet rich in omega-3 fatty acids from sources like salmon, sardines, and flaxseed, or a high-quality triglyceride-form supplement, is clinically proven to improve meibum quality and reduce inflammation.
• Environmental modifications: Using a humidifier in your bedroom and workspace, directing car and office vents away from your face, and wearing wraparound sunglasses outdoors can significantly reduce tear evaporation.
• Makeup modifications: Avoid applying eyeliner to the inner waterline of your eyelids, and always remove all eye makeup thoroughly before bed using a gentle, oil-free cleanser.

When foundational care is not enough to control symptoms and inflammation, our ophthalmologists may prescribe medications to add to your treatment plan. Anti-inflammatory eye drops include short-term corticosteroid drops to calm severe flare-ups and long-term immunomodulators like cyclosporine, lifitegrast, and varenicline, which reduce the underlying inflammatory cycle and stimulate tear production.

• Antibiotic therapies: Certain antibiotic drops or ointments, such as azithromycin, have powerful anti-inflammatory properties in addition to their antimicrobial effects. In some cases, low-dose oral antibiotics like doxycycline are prescribed specifically for their anti-inflammatory effects on the meibomian glands and eyelid margins.
• Lipid-based artificial tears: Specialized artificial tears that contain oils or lipid emulsions can help supplement the deficient lipid layer of your tear film and provide longer-lasting relief than standard artificial tears.

For moderate to severe MGD, ReFocus Eye Health Bloomfield Jolley offers advanced procedures that can provide significant and lasting relief by directly unblocking and stimulating the meibomian glands. Thermal pulsation devices like LipiFlow and TearCare deliver precisely controlled heat to the inner eyelids to melt obstructions, followed by gentle pulsating pressure to fully evacuate the glands. This in-office treatment typically takes 12 to 15 minutes per session.

• Intense Pulsed Light therapy: IPL uses specific wavelengths of light applied to the skin around the eyes to reduce inflammation, close abnormal blood vessels that contribute to eyelid inflammation, and heat the glands to improve oil flow. Multiple treatment sessions spaced several weeks apart are typically recommended for optimal results.
• Lid margin exfoliation: Specialized medical devices can precisely and safely exfoliate the eyelid margin, removing accumulated bacterial biofilm and debris that contribute to chronic inflammation and gland obstruction.
• Meibomian gland probing: For glands with significant scar tissue or physical blockages, a sterile, hair-thin probe can be used to manually clear the duct and restore the pathway for oil to flow. This procedure is performed under topical anesthesia.

MGD is a chronic condition that requires ongoing management to maintain gland function and symptom relief. Our ophthalmologists will work with you to develop a long-term maintenance plan that may include regular in-office treatments, continued at-home care, and periodic imaging to monitor your gland health. Regular follow-up appointments allow us to adjust your treatment plan as needed to ensure optimal results.