In pathology terms the difference between astigmatism and glaucoma

is that astigmatism is a disorder of the vision, usually due to a misshapen cornea, such that light does not focus correctly on the retina causing a blurred image while glaucoma is an eye disease or disorder that is defined as a characteristic optic neuropathy, or disease of the optic nerve, possibly, if untreated, leading to damage of the optic disc of the eye and resultant visual field loss due to lack of communication between the retina and the brain, which can lead to blindness.

As nouns the difference between astigmatism and glaucoma

is that astigmatism is a defect of a lens such that light rays coming from a point do not meet at a focal point so that the image is blurred while glaucoma is an eye disease or disorder that is defined as a characteristic optic neuropathy, or disease of the optic nerve, possibly, if untreated, leading to damage of the optic disc of the eye and resultant visual field loss due to lack of communication between the retina and the brain, which can lead to blindness.