Watery discharge or unusual tearing from only one eye in a child can happen due to mild irritation, allergy, blocked tear duct, dust exposure, or sometimes early eye infection. In many cases, the eye produces extra tears when it is trying to protect itself from dryness or irritation, so it may look like constant watering. If there is no redness or pain, it is often a minor issue, but it still needs attention because one-sided symptoms should not be ignored. At home, you can gently clean the eye with clean cotton and boiled, cooled water, and make sure the child avoids rubbing the eye. Keep the face and hands clean and reduce exposure to dust or smoke. If it is related to a blocked tear duct, a warm compress and gentle massage near the inner corner of the eye may sometimes help. If there is redness, sticky discharge, swelling, pain, fever, or vision changes, it is important to get an eye examination early. A pediatric eye specialist can check for infection or blockage and suggest proper treatment if needed.