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3 Types of Astigmatism

Astigmatism is one of the most common refractive errors in the world. In patients with astigmatism, the eye is more “football” shaped, causing the light to be reflected onto the retina poorly. This causes issues with focusing, making for vision blurry.  Astigmatism is easily diagnosed during your routine eye examinations. The most common signs of astigmatism include blurred vision and distorted sight. Astigmatism can be reasonably corrected with glasses and contact lenses, or with a more permanent solution, custom LASIK surgery.

3 TYPES OF ASTIGMATISM

Imagine the front of the eye as a clock. The line connecting the 12 and 6 is one meridian, and the line connecting 3 and 9 is another meridian. In relation to these meridians, astigmatism has 3 types: 1) Myopic Astigmatism, 2) Hyperopic Astigmatism, and 3) Mixed Astigmatism.

In Myopic Astigmatism, one or both principal meridians of the eye are nearsighted. Whereas Hyperopic Astigmatism, one or both principal meridians are far sighted. Lastly, Mixed Astigmatism has one principal meridian that is nearsighted and the other is far sighted.

Astigmatism, if left untreated, could result in eye strain and headaches after reading or after a prolonged task. Squinting may also be seen in some patients. Treatment of astigmatism can include corrective lenses and refractive surgery.

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