Final answer:
In a chemistry lab, you should always wear safety glasses or goggles to protect your eyes from chemicals and never wear contact lenses as they can trap chemicals against the eye.
Step-by-step explanation:
If you need to wear corrective eyewear, you should always wear safety glasses or goggles, and never contact lenses because chemicals can get underneath these during laboratory experiments. It is crucial to protect your eyes when working with chemicals to prevent any potential injury or irritation. Safety glasses or goggles are designed to provide a protective barrier around your eyes, limiting the risk of damage from splashes, fumes, or debris. Contact lenses, on the other hand, can absorb chemicals and trap them against your eye, leading to an increased risk of eye damage or irritation. Therefore, it's important to use the appropriate eye protection in a chemistry lab.