There are also secondary forms of glaucoma that can result from eye trauma, inflammatory eye disease, or cortisone treatment.
Very rare forms of glaucoma can occur from birth (congenital glaucoma) and there are also many other rare forms of glaucoma associated or not with general diseases.
We can therefore speak of glaucomas rather than "glaucoma".
However, the most common form of glaucoma is chronic open-angle glaucoma and this is the form that is most often referred to when referring to "glaucoma".
