6. Mechanism of visual loss in glaucoma Retinal ganglion cell atrophy Thinning of the inner nuclear and nerve fiber layers of retina Axonal loss in the optic nerve Optic disk becomes atrophic Enlargement of the optic cup
13. MECHANISM Apposition of the lens to the back of iris prevent the flow of aqueous Aqueous then collects behind the iris and pushes it on to the trabecular meshwork preventing the drainage of aqueous IOP rises rapidly