What causes itchy eyes?

Itchy eyes can be caused by several factors. The following are some common causes: 1. Allergic reactions: Allergic conjunctivitis can cause itchy eyes, accompanied by redness and tearing. 2. Dry eye syndrome: When the eyes do not produce enough tears or the quality of tears is reduced, the eye surface can become dry, leading to a sensation of itchiness. 3. Eye fatigue: Prolonged focus on computer or smartphone screens can cause this. 4. Bacterial or viral infections: Such as conjunctivitis (commonly known as "pink eye"), which can also cause itchy eyes. Note that if symptoms persist or are accompanied by other symptoms such as vision loss or increased discharge, medical attention should be sought promptly.