How long should eyewash be used during the eyewash procedure when chemicals contact the eyes?

How long should eyewash be used during the eyewash procedure when chemicals contact the eyes?

• A. 10 minutes
• B. 15 minutes
• C. 30 minutes
• D. 60 minutes

Answer: (C)

The main idea is that eyes must be flushed long enough to remove chemical residues from all eye surfaces. Chemicals can cling to the cornea, conjunctiva, and hidden folds, so a thorough rinse is needed to minimize ongoing irritation or damage. Thirty minutes of continuous rinsing provides enough time to dilute and wash away most common lab chemicals from the eye, reducing the risk of burns or lasting injury. Shorter rinses, such as ten or fifteen minutes, may not completely clear the substance, especially for caustic or persistent agents. An hour-long rinse is generally more than necessary for typical exposures and isn’t usually required. After the rinse, seek medical evaluation if pain, vision changes, or persistent symptoms occur.

The main idea is that eyes must be flushed long enough to remove chemical residues from all eye surfaces. Chemicals can cling to the cornea, conjunctiva, and hidden folds, so a thorough rinse is needed to minimize ongoing irritation or damage. Thirty minutes of continuous rinsing provides enough time to dilute and wash away most common lab chemicals from the eye, reducing the risk of burns or lasting injury. Shorter rinses, such as ten or fifteen minutes, may not completely clear the substance, especially for caustic or persistent agents. An hour-long rinse is generally more than necessary for typical exposures and isn’t usually required. After the rinse, seek medical evaluation if pain, vision changes, or persistent symptoms occur.