It can also be caused by. 1  chemicals. 2  contact lens wear(https://www.cdc.gov/contactlenses/index.html) (especially wearing lenses overnight) 3  foreign bodies in the eye (like a loose eyelash) 4  indoor and outdoor air pollution caused, for example, by chemical vapors, fumes, smoke, or dust. 5  fungi.
Voluntarism, sometimes referred to as voluntary action, is the principle that individuals are free to choose goals and how to achieve them within the bounds of certain societal and cultural constraints, as opposed to actions that are coerced or predetermined. 1 Volunteerism. 2 Varieties.
Chauvinism is a form of extreme patriotism and a belief in national superiority and glory. Whereas patriotism and nationalism may represent temperate pride, chauvinism is intemperate. It can be also defined as an irrational belief in the superiority or dominance of one's own group or people.