Glaucoma, a progressive optic neuropathy characterized by retinal ganglion cell degeneration and visual field loss, is the leading cause of irreversible blindness worldwide.A leading causes of irreversible blindness.glucoma is a group of eye conditions the progressively damge the optic nerves leading irreversible vision loss a and blindness.glucoma is characterized by increasing introcular pressure( iop) optic nerve damge and visual field loss.primary open angle glucoma (poag)is chronic disease characterized by elveted intravascular and visual field loss. A chronic progressive eye disease caused by damage to the optic nerve which leads to visuals field loss glucoma is a heterogeneous group disease characterized by capping of the optic nerve to bead and visual field damage .A gernal understand of die pathophysiology the gole treatment with drop larer therapy or surgery is to slow visual field loss by lowering introcular pressure.they are the optic nerve atrophy peripheral visual field loss.their are several type of test and type and glucoma and treatment of present type of glucoma are open angle glucoma closure glucoma congenital glucoma childhood glucoma and secondary glucoma present