Ammonia fumes can permanently fog soft contact lenses. Briefly explain why students wearing soft contact lenses should be particularly careful when doing this experiment.

Answer 1

what experiment?

Answer 2

Ammonia?

Answer 3

That doesn't tell me anything. But I think what you want to know is the dangers involved with wearing soft contact lenses when working with gaseous NH3. The problem is that the NH3 gas can be trapped between the lens and the eye and if the NH3 isn't flushed immediately it can cause significant damage. The contact lense not only traps the gas but it prevent easy removal of the gas.