Glaucoma 

Glaucoma is a disease in which the optic nerve is damaged, leading to progressive and irreversible loss of vision. Glaucoma can develop at any intraocular pressure (IOP), but elevated intraocular pressure is one of the major risk factors for the development and progression of glaucoma. Trabeculectomy is a type of glaucoma surgery performed on the eye that creates a new pathway for fluid inside the eye to be drained