what the hell is a nug i keep hearin people say it but i dunno what it means. im good on most other words its just this one i got trouble with.
1 Improper use of contact lenses or steroid eyedrops can lead to fungal infections, which in turn can cause corneal ulcers. Also, a corneal injury that results in plant material getting into the eye can lead to fungal keratitis.  Acanthamoeba are microscopic, single-celled amoeba that can cause human infection.
Until the mid-1980s, the conventional wisdom was that ulcers form as a result of stress, a genetic predisposition to excessive stomach acid secretion, and poor lifestyle habits (including overindulging in rich and fatty foods, alcohol, caffeine, and tobacco).