What is the appropriate action for a lab assistant if chemicals get into someone's eyes?

The appropriate action for a lab assistant when chemicals get into someone's eyes is to wash the eyes with water. This action is critical because thorough rinsing helps to dilute and flush out the harmful substances, minimizing potential damage to the eye tissue. Water is the safest and most effective substance for irrigation in such scenarios, as it helps to remove irritants and provides immediate relief.

Using soap or alcohol-based solutions is not recommended, as these could worsen the irritation or cause further damage. Additionally, applying ointment immediately can trap the chemical in the eye and delay the necessary flushing process, which is crucial in emergency situations involving exposure to chemicals. Therefore, prompt and continuous rinsing with water is the best course of action to protect the eyes from harm.