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Refractive Eye Problems
Myopia (nearsightedness)
You are myopic (nearsighted) if an object is blurry when it is far away. An enlongated eye, in relation to the curvature of your cornea causes this condition. Light rays entering the eye focus in front of the retina causing objects that are far away to become blurred. The more myopic you are, the higher in diopters your lens prescription will be.
Hyperopia (farsightedness)
You are hyperopic (farsighted) if you can see a far away object clearly but when the object is closer to you, it becomes blurred. This condition is caused by a shorter than normal eye in relation to your cornea. The light rays don't focus directly on your retina. Instead, they become focused behind your retina, causing a blurred image of close objects.
Astigmatism
Astigmatism occurs when your cornea is oval in shape rather than the circular ring shape it should be. The cornea protrudes slightly causing light rays to enter your eyes unevenly. As a result, this astigmatic condition causes objects both far and near to appear blurry or distorted.
Patients who are myopic (nearsighted) or hyperopic (farsighted) can also have astigmatism.
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