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If you experience symptoms such as eye pain or excessive watering, let your doctor know. Other conditions that warrant contacting your doctor include changes in your vision, red or swollen eyes, and if you notice unusual pus or drainage coming from any part of your eye. If you do not see any improvement or if your symptoms get worse, let your doctor know. If you are being treated for an infection, watch for symptoms in the other eye. Let your doctor know if you begin to see evidence that the infection may have spread. If you develop skin changes like a rash or hives, difficulty breathing, swelling around your eye area, swelling anywhere on your face, tightness of your chest, or feel like your throat is tightening, you may be having an allergic reaction. An allergic reaction is a medical emergency. Call 911 or seek medical attention the fastest way possible. Do not attempt to drive yourself to a hospital. If you think you are having an allergic reaction from your eye drops, rinse your eyes with an eyewash product if one is available.  If you do not have an eyewash product, then use regular water to flush the eye drop solution out of your eyes to prevent further absorption.  Tilt your head to the side, hold your eye open, and allow clean water to flush the eye drop solution from your eye.
Contact your doctor if you have unexpected symptoms. Monitor your symptoms. Watch for an allergic reaction. Rinse your eyes.