sentences:  Full thickness procedures include sclerectomy, posterior lip sclerectomy (in which the surgeon completely excises the sclera on the area of the sclerostomy), trephination, thermal sclerostomy (Scheie procedure), iridenclesis, and sclerostomy (including conventional sclerostomy and enzymatic sclerostomy).Non-penetrating filtering surgeries do not penetrate or enter the eye's anterior chamber.There are two types of non-penetrating surgeries