what is astigmatism? All the online definitions don’t make any sense. Ty
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Your cornea is the clear part on the surface of your eye, in front of the iris and pupil.
Astigmatism is when the cornea is the wrong shape, or warped. This odd shape bends the light entering your eye, so the lens in your eye (in the center of your eyeball) will not appropriately focus the light on the retina (at the back of the eyeball)
Glasses fix this by bending the light before it enters your eye, so the light being bent by the cornea just undoes what the glasses did, and the lens can then effectively focus light on your retina.
Normal bad vision is caused by the eyeball being too long or too short. Glasses fix this by adjusting the slight so your lens will focus the light in the appropriate spot on the retina
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