A watery eye after cataract surgery is common and usually part of normal healing. It can be caused by mild irritation, dryness, or temporary sensitivity of the eye surface. Using prescribed drops helps soothe the eye. If tearing is excessive, painful, or persistent, consult your eye specialist promptly. https://ikshaeyecare.com/what-is-the-reason-for-irritation-and-watering-after-cataract-surgery/