Astigmatism is a very common refractive error that occurs because eyes are often not perfectly round or spherical on the surface. It is commonly referred to as an oval or “rugby-ball” shaped eye and typically results from the front surface (cornea) of the eye having two different curvatures. This results in blurry vision at both distances, difficultly concentrating and tired eyes. It can also cause “ghosting” or doubling of streetlights, headlights, print and glare under bright lights or sunlight that can cause eyestrain and headaches from squinting. Astigmatism can be inherited, but it often happens as a normal characteristic of growth. 

Astigmatism can be present by itself or in conjunction with myopia and hyperopia. It can also be often easily corrected with glasses, contact lenses and in some cases, refractive surgery.