T  h  i  n  k    hard,  work
Eye protection includes goggles, faceshields, and safety glasses.   Things to keep out of your eyes are sharp objects, flying fragments, caustic chemicals, and pressurized gas.
Use of power tools, use of hammers, battery maintenance, and high-speed travel are possible situations where eye protection is warranted.
Transparent eye shields must be kept clean to prevent obstruction of vision.