What I’ve Observed After More Than 30 Years in Clinical Practice
For many years, dry eye disease and atrial fibrillation (AFib) were viewed as unrelated conditions—one affecting the eyes and the other the heart. However, after more than three decades in medically oriented eye care, I have come to believe that these two common conditions often share overlapping root causes, particularly involving hydration, electrolyte balance, inflammation, and nutrition.
Since opening my practice in 1992, and through my work at Lange Eye Institute, I have evaluated and treated thousands of patients, most of whom are in their late 70s and early 80s. Over time, a consistent clinical pattern has emerged—one that extends well beyond the eyes alone.
A Unique Clinical Environment: The Villages, Florida
Practicing in The Villages offers a unique view into active aging. This is a vibrant community where many residents regularly participate in:
- Golf
- Tennis and pickleball
- Softball
- Cycling
- Walking and outdoor fitness
Much of this activity occurs in the Florida sun, often accompanied by:
- Inadequate water intake
- Regular consumption of coffee, tea, and alcohol
- Increased sweating and fluid loss
Coffee, tea, and alcohol all act as diuretics, increasing dehydration and electrolyte loss. Over time, this creates an ideal environment for dry eye disease and cardiac rhythm instability to coexist.
I often say—only half joking—that we practice in the “dry eye capital of the world.” At the same time, atrial fibrillation is extremely common in this population.
The Common Thread: Dehydration and Electrolyte Imbalance
Dry eye disease is not merely a local eye problem. Tears are a complex biological fluid dependent on adequate hydration and proper electrolyte balance.
Dehydration
When the body is dehydrated:
- Tear volume decreases
- Tear osmolarity increases
- Ocular surface inflammation worsens
Simultaneously, dehydration:
- Increases sympathetic nervous system activity
- Concentrates electrolytes unevenly
- Increases atrial irritability
These same mechanisms are well recognized contributors to paroxysmal atrial fibrillation, particularly in older, active adults.
Sodium (NaCl): The Often-Overlooked Hydration Electrolyte
Sodium is frequently misunderstood and often unnecessarily restricted, especially in older adults.
While excessive sodium intake can be harmful for certain individuals, inadequate sodium intake can impair hydration and worsen overall electrolyte balance, particularly in active patients who sweat, drink large volumes of water, or use diuretic medications.
Sodium plays a critical role in:
- Maintaining proper cellular hydration
- Supporting nerve and muscle function
- Allowing potassium and magnesium to function effectively
- Preserving tear film stability
In my experience, many patients in The Villages are under-hydrated at the cellular level, not because they fail to drink water, but because they drink water without adequate electrolytes.
This imbalance can worsen dry eye symptoms and may contribute to systemic effects, including cardiac rhythm instability, when combined with low potassium, low magnesium, and chronic dehydration.
It is important to emphasize that electrolyte balance—not sodium alone—is what matters, and sodium intake should always be individualized based on activity level, sweating, medications, blood pressure status, and overall health.
Magnesium and Potassium: Essential but Commonly Deficient
Potassium
Potassium is critical for:
- Tear secretion and corneal epithelial health
- Proper electrical signaling in cardiac tissue
Low potassium—often due to sweating, diuretics, dehydration, or poor dietary intake—can worsen dry eye symptoms while also destabilizing heart rhythm.
Magnesium
Magnesium deficiency is one of the most frequent nutritional issues I observe.
Magnesium plays a key role in:
- Modulating inflammation and nerve signaling in the eye
- Stabilizing sodium, potassium, and calcium channels in the heart
Low magnesium increases ocular surface inflammation and atrial electrical instability. Importantly, standard blood tests often fail to detect functional magnesium deficiency.
Omega-3 Deficiency and Systemic Inflammation
Another consistent finding in my practice is inadequate omega-3 intake.
Low omega-3 status is associated with:
- Meibomian gland dysfunction
- Tear film instability
- Chronic ocular surface inflammation
Omega-3 fatty acids are equally important for cardiovascular health. They:
- Improve cell membrane fluidity
- Reduce inflammatory signaling
- Support microvascular circulation
- Help stabilize cardiac electrical activity
In my experience, many patients with both dry eye and AFib share the same nutritional gaps: low omega-3 intake combined with dehydration and electrolyte imbalance.
From Observation to Action: Developing a Targeted Solution
After years of clinical observation and research, I developed the Fortifeye Advanced Dry Eye Therapy Supplement Kit to address these overlapping deficiencies in a comprehensive, science-based way.
This kit includes three foundational supplements:
Fortifeye Super Omega
A re-esterified triglyceride (rTG) omega-3 manufactured in Norway for superior absorption, designed to support tear stability, reduce inflammation, and improve circulation.
Fortifeye Black Currant Oil (GLA)
A rich source of gamma-linolenic acid (GLA), a fatty acid largely missing from the typical American diet, which helps regulate inflammatory pathways and supports ocular surface and vascular health.
Fortifeye Focus
Provides key carotenoids and nutrients commonly deficient in the Standard American Diet (SAD), supporting ocular tissue health and microcirculation.
Used together, these supplements have been shown to:
- Improve dry eye symptoms
- Reduce inflammatory markers
- Support circulation throughout the body
Nutrition, Hydration, and Lifestyle Still Matter Most
Supplementation alone is never the full solution. I also encourage patients to:
- Consume potassium-rich foods such as bananas and avocados
- Increase magnesium intake through foods like sprouted pumpkin seeds
- Maintain hydration using high-quality spring water or structured water, ideally with balanced electrolytes
- Avoid extreme low-sodium diets unless medically indicated
- Balance physical activity with proper fluid and electrolyte replacement
- Prioritize sleep and stress management
Dry Eye as an Early Warning Sign
After discussions with thousands of patients over many years, I now view dry eye disease as more than a comfort issue.
In many individuals, dry eye appears to be an early peripheral marker of systemic imbalance, one that may precede or coexist with atrial fibrillation.
This does not mean dry eye causes AFib. Rather, both conditions often arise from the same physiologic environment:
- Chronic low-grade inflammation
- Dehydration
- Electrolyte depletion
- Nutritional deficiencies
- Autonomic nervous system imbalance
A Preventive, Root-Cause Philosophy
For this reason, I emphasize education as much as treatment. Each patient also receives a booklet I authored, “The Lange Wellness and Longevity Plan,” which outlines practical steps to support ocular health and overall longevity.
By addressing hydration, electrolytes, omega-3 intake, and lifestyle, I believe we are not only helping patients see and feel better—but potentially reducing their risk of broader systemic conditions, including atrial fibrillation.
Final Thoughts
After more than 30 years in practice, one principle remains clear:
The eyes reflect the health of the entire body.
Dry eye disease and atrial fibrillation are common in aging, active populations—but they are not inevitable. When we address hydration, electrolyte balance (including sodium), omega-3 intake, inflammation, and lifestyle, we support the health of both the eyes and the heart.
