What is a common symptom of dry eye syndrome?

Blurry vision is indeed a common symptom of dry eye syndrome and occurs due to the instability of the tear film that results from inadequate lubrication on the surface of the eye. When the eyes lack sufficient moisture, the tear film can become disrupted, leading to fluctuations in vision clarity. This blurred vision can often improve temporarily after blinking, as tears are spread across the corneal surface, but it tends to become blurry again due to the ongoing dryness.

While watery eyes, red eyes, and persistent itching can be associated with various eye conditions, they are less specifically indicative of dry eye syndrome. Watery eyes can occur as a reaction to irritation but are paradoxically associated with dry eye conditions as the body attempts to compensate for the lack of moisture. Red eyes may indicate inflammation or irritation but are not exclusive to dry eye syndrome. Persistent itching is more characteristic of allergies rather than dry eye syndrome, making blurry vision the most relevant symptom in this context.