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.
Noun. 1. humanism-the doctrine that people's duty is to promote human welfare. humanitarianism. doctrine, ism, philosophical system, philosophy, school of thought-a belief (or system of beliefs) accepted as authoritative by some group or school.. a devotion to or study of the humanities. 3. a theory of the life of man as a responsible being behaving independently of a revelation or deity. Also called naturalistic, scientific, or philosophical humanism. â humanist, n.