Which of the following should be used to flush eyes if contaminated?

Flushing eyes that have been contaminated is critical to minimize damage or irritation. Water is highly accessible and effective for this purpose. It helps to gently rinse away harmful substances, debris, or chemicals from the surface of the eye. The force of the water and its temperature (usually at room temperature) make it suitable for washing out potential irritants without causing further injury.

While saline solution may also be used under certain circumstances, it is typically not the first line of treatment compared to plain water. Soap and water could introduce additional irritants, and distilled water, while pure, may not be readily accessible in emergencies. Thus, using plain water is generally considered the safest and most effective immediate action for eye irrigation in case of contamination.