Abraham Lincoln, the 16th President of the United States, was assassinated by John Wilkes Booth on Good Friday, April 14, 1865, while attending the play Our American Cousin at Ford's Theatre in Washington, D.C., as the American Civil War was drawing to a close.
Eye drops have preservatives in them to ensure the sealed product remains sterile until the expiry date. After opening however, the preservative can only ensure the drops are safe for the eye for a period of 28 days. After this, using the drops can cause serious damage to the eye as bacteria may have been introduced. The ingredients themselves will also not be as effective and could be dangerous. Always record the date eye drops are opened and do not use them after 28 days. Some eye drops now have longer expiry dates after opening-always check the packet.
Treatment. A chemical burn of the eye is treated immediately, even before medical personnel arrive. The eye is opened and flushed (irrigated) with water or saline. When burns are caused by strong acids or alkali or other severely caustic substances, the eye should be irrigated continuously for 30 to 120 minutes.