Your eyes need inner pressure, known as intraocular pressure (IOP), to maintain the optimum form. At times, this tension accumulates and applies pressure on the optic nerve. If the optic nerve will become broken, this may modify the vision. This can be a ailment referred to as glaucoma. It’s the primary reason for blindness in America. While glaucoma impacts both eyes, at times 1 eye advances faster compared to other. The result is progressive lack of the visual fields, also referred to as ‘tunnel vision’. Patanol might be prescribed to restore normal eye stress in a few types of glaucoma.