Where there is a risk of contamination to your eyes you should use a full face respirator with visor.
The full face mask not only filters the air, but also prevents dust and other airborne particles from affecting your eyes.
3M is a world leading brand in the supply of Reusable Respiratory Protection: the 3m 6000 series reusable respirator has 2 valves and an exhalation point.
Sundstrom are the Swedish innovators in the full face masks. The Sundstrom SR200 face mask allows you a wide, deep full vision, while allowing you breathe comfortably. (This can also be conencted to an airfed respiratory system).
We also supply emergency escape hoods - the MSA S-Cape Hood allows you full respiratory support as you flee a gas risk. This is a handy S Cape Hood to have in a plant where there's risk of poisoning from smoke, especially carbon monoxide.