Can dry eye syndrome cause fatigue?

Can Dry Eye Syndrome Cause Fatigue?

Yes, dry eye syndrome is strongly associated with ocular fatigue and can lead to chronic fatigue syndrome, with dry eye patients experiencing significantly higher rates of both eye-related tiredness and systemic fatigue compared to those without the condition.

Direct Link Between Dry Eyes and Ocular Fatigue

Ocular fatigue is the predominant symptom of dry eye disease. Among patients complaining of ocular fatigue, 51.4% have underlying dry eye—significantly higher than the general population rate of 15.3% 1. Conversely, 71.3% of dry eye patients with symptoms report ocular fatigue, compared to only 21.2% of all patients 1.

• Dry eye patients report an average of 4.3 complaints per patient, compared to 1.9 complaints in controls, indicating a substantially higher symptom burden 1
• The relationship between ocular fatigue and dry eye is bidirectional and clinically significant 1

Progression to Systemic Chronic Fatigue

The connection extends beyond eye-related tiredness to systemic fatigue:

• Dry eye patients have a 2.08-fold increased risk of developing chronic fatigue syndrome (CFS) compared to those without dry eye 2
• Even after adjusting for age, sex, and comorbidities, the risk remains elevated at 1.61-fold 2
• When CFS-related comorbidities are present, the adjusted hazard ratio increases to 1.98 2
• Patients with three or more annual medical visits for dry eye show a 4.88-fold increased risk of developing CFS 2

Impact on Daily Function and Work Productivity

The fatigue associated with dry eye significantly affects quality of life:

• Up to 70% of patients experience inhibition of daily activities at work due to dry eye symptoms 3
• More than 5% experience symptoms most or all of the time that interfere with work 3
• Patients with significant dry eye (daily/almost daily symptoms) are 3.81 times more likely to report that living with their condition makes every day a challenge 4
• The emotional burden is also substantial, with a 2.22-fold increased odds of reporting significant emotional distress 4

Comparative Burden with Other Symptoms

While fatigue from dry eye is significant, it's important to contextualize its impact:

• Among Sjögren syndrome patients, 53% experience severe dry eye daily, 48% have severe dry mouth, and 45% report severe fatigue 4
• The impact of dry eye on patient life is comparable to dry mouth and considerably higher than systemic treatments for serious disease manifestations 4
• Fatigue has the greatest overall impact on patient life in Sjögren syndrome, but dry eye's impact is substantial and comparable to other systemic manifestations 4

Clinical Implications

The natural history of dry eye includes symptoms that are typically worse at the end of the day, which aligns with the fatigue pattern 5. Environmental factors and increased screen time (which reduces blink rate) can exacerbate both dry eye and associated fatigue 5.

• Physicians should actively screen for chronic fatigue syndrome in patients with dry eye, particularly those requiring frequent medical visits 2
• The disease usually fluctuates in severity and is characterized by troublesome symptoms of irritation that worsen throughout the day 5
• Treatment goals should include reducing ocular irritation, maintaining visual function, and preventing ocular surface damage—all of which may help mitigate associated fatigue 5