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.
Ulcers may be caused by injury or pressure. They may also be caused by bacterial infection and cellulitis, which is an infection of the skin and its underlying connective tissues. Chronic leg ulcers may also be due to skin cancer, which can be diagnosed by a skin biopsy of a suspicious lesion.