Do not use - if solution changes color or becomes cloudy. Stop use and ask a doctor if - you experience eye pain, changes in vision, continued redness or irritation. Condition worsens or persists for more than 72 hours. Keep out of reach of children. If swallowed, get medical help or contact a poison control center immediately. For external use only, to avoid contamination do not touch tip of opened container to any surface. Do not reuse. Once opened discard. Use individual vials within 90 days of opening foil pouch. This product contains no preservatives. Any solution not used immediately after opening should be discarded. Re-use of this single-use product may lead to inflammation of the eye and/or discomfort, based on potential contamination during handling.