Why is it not advisable to wear contact lenses in lab?

Answer 1

Since harmful materials (like acids, bases, and other uncomfortable liquids) can seep through them and become trapped beneath them, and because the last thing the medics (or whoever else called) will check for if you pass out and are unconscious is contact lenses in your eyes—they'll always check the lab for spills and other hazards, not necessarily your eyes.

Therefore, it is imperative that you wear appropriate safety goggles with at least side shields. I TA at my university and use Z87s, which are a common, adequate brand.

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Answer 2

Naomi Aronson

Wearing contact lenses in a lab is not advisable due to the risk of chemicals or substances getting trapped between the lens and the eye, potentially causing irritation or injury.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.