What temperature of water is recommended for flushing chemical burns to the eye?

• A. Hot water
• B. Cold water
• C. Lukewarm water
• D. Room temperature water

Answer: (C)

For flushing a chemical burn to the eye, tepid water is best because it provides a comfortable, steady rinse without adding thermal stress to the already irritated tissue. Lukewarm (tepid) water is close to body temperature, which helps you keep the eye open and rinse for a sufficient duration without shocking the eye or causing further damage.

Hot water would add heat to the eye, potentially worsening injury and speeding up chemical reactions on the surface. Cold water can be painful and may trigger reflex tearing, making it harder to maintain a continuous, thorough rinse. Room temperature water is acceptable in a pinch, but lukewarm is preferred for comfort and effectiveness in flushing out the chemical.