If a chemical splash or spray to the eyes or skin does occur, prompt action can greatly reduce the severity of injury. Time is critical and seconds count. Unless flushed immediately and thoroughly, tissue destruction may occur. Strong bases denature eye proteins causing them to become opaque (just as when you fry an egg and the albumin goes from clear to white). This is not reversible. You should know exactly where the nearest safety shower and eyewash is for each part of the facility in which you work. The open area under the safety shower is often choice space for putting boxes or storing a cart. Resist the temptation and keep access to it free and clear of obstacles. One day you may need to find it quickly and with your eyes closed.

From: Chemical Safety in the Forensic Lab by The Safety Guys