Watery eyes occur when there is an overproduction of tears or an impairment in their drainage. This common symptom can arise from various irritations or underlying conditions affecting the eyes or tear system. This article explores the potential connection between watery eyes and COVID-19, in addition to detailing other frequent causes and providing guidance on when to seek medical attention.
Watery Eyes as a COVID-19 Symptom
Watery eyes can be a symptom of COVID-19. This ocular presentation is frequently associated with conjunctivitis, commonly referred to as pink eye, which can be triggered by the SARS-CoV-2 virus.
Ocular symptoms have been reported in COVID-19 patients, with prevalence estimates varying from approximately 2% to 32% across studies. Conjunctivitis is considered one of the most common eye-related manifestations of the infection. These eye symptoms can emerge early in the disease process, sometimes even appearing as an initial indication of COVID-19. While often accompanying more recognized symptoms like fever, cough, or fatigue, watery eyes may occasionally be an isolated sign of the illness.
Common Reasons for Watery Eyes
Watery eyes are a general symptom that can result from numerous factors unrelated to COVID-19. One frequent cause is allergies, where airborne irritants such as pollen, dust, or pet dander provoke an immune response. The eyes naturally produce tears as a protective mechanism to flush out these foreign substances.
Paradoxically, dry eyes are another prevalent reason for watery eyes. When the eyes are overly dry, they become irritated, prompting a reflex response to produce tears to compensate for the lack of lubrication. These reflex tears, however, often lack the proper balance of oil and mucus needed for effective and lasting moisture, leading to continued irritation and tearing.
Infections, such as bacterial or viral conjunctivitis, also commonly lead to watery eyes. These conditions often present with redness, itching, and discharge. Viral conjunctivitis typically produces a clear, watery discharge, while bacterial forms are more often associated with thick, sticky, or pus-like discharge.
Blocked tear ducts can prevent tears from draining properly, causing them to accumulate and overflow onto the cheeks. Environmental irritants like smoke, wind, or even a foreign object such as an eyelash can trigger tearing as the eye attempts to clear itself. Prolonged eye strain, often from extensive screen time, can also lead to reduced blinking, resulting in initial dryness followed by reflex tearing.
When to Consult a Doctor
While watery eyes frequently resolve on their own, certain signs indicate the need for medical evaluation. It is advisable to consult a healthcare provider if the watery eyes are persistent and do not improve.
Seek immediate medical attention if you experience severe eye pain, changes in vision, or blurred vision. Other concerning symptoms include extreme redness or swelling of the eye, the presence of pus or thick discharge, or increased sensitivity to light. If watery eyes are accompanied by other severe symptoms such as fever, persistent headache, or difficulty breathing, prompt medical advice is recommended.