For eye allergies and inflammation, you can try avoiding the trigger (like dust, pollen, or smoke), rinsing your eyes with clean water or saline, and using cold compresses to reduce swelling and itching. Over-the-counter antihistamine or anti-allergy eye drops may help, but if symptoms are severe or persist, see an eye doctor for proper treatment.

Photokeratitis is like a sunburn of the eyes caused by too much UV light, such as from sunlight, tanning lamps, or welding without eye protection. It can cause pain, redness, tearing, blurry vision, and sensitivity to light. Symptoms usually appear a few hours after exposure and often get better in 1 to 2 days with rest, artificial tears, and avoiding bright light.

Eyes can water even without inflammation for several reasons, such as dry eyes (the eyes produce extra tears to stay moist), allergies, irritation from smoke or wind, blocked tear ducts, or prolonged screen use. Usually, it is not serious, but if it continues or is accompanied by pain or vision changes, see an eye doctor for proper evaluation.

Swelling with pus coming from your eye is a sign of a serious eye infection. You should see an eye doctor, as it may need prescription antibiotics or other treatment. Do not try to squeeze or rub the eye, and keep it clean and covered lightly until you get medical care.