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Astigmatism By: Kelly Purcell. What is it? An eye condition characterized by irregular curvature of the cornea.

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Presentation on theme: "Astigmatism By: Kelly Purcell. What is it? An eye condition characterized by irregular curvature of the cornea."— Presentation transcript:

1 Astigmatism By: Kelly Purcell

2 What is it? An eye condition characterized by irregular curvature of the cornea

3 What causes it? Caused by the lens and cornea not being perfectly symmetrical The cornea or lens have an irregular shap such a the shape of a football Can ne hereditary Also caused by bad posture & increased use of the eye

4 Effects of Astigmatisms Loss of focus Causes difference of power in eye along the meridians

5 Astigmatisms Anyone can have them Mild astigmatisms may have no symptoms More severe symptoms include: Headaches Eye strain or fatigue Squinting Blurred vision at all distances Holding reading material closer than normal

6 Treatment Astigmatisms can be treated with glasses or contacts No treatment is needed for many mild astigmatisms

7 Normal Vision vs. Astigmatisms

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