Astigmatism occurs when the eye is shaped more like an oval than a sphere, causing blurry vision. Astigmatism affects about one in three Americans and it occurs more frequently as you age.

Medically reviewed by Christine L. Larsen, MD Nearsightedness (myopia) is the ability to see objects up close clearly, while ...

Using advanced technology IOLs now allows eye surgeons to correct your vision for different distances, as well as astigmatism. Depending on your lifestyle, you may need to improve your sight for ...

Residual astigmatism was lower with toric IOLs in ... Jade Coats, OD McDonald Eye Associates, Rogers, Arkansas. This perspective is powered by the American Academy of Optometry Communications ...

This Color vision testing is based on the Ishihara Test for color blindness. Color blindness is a condition where people find it difficult to distinguish between certain colors. This color blindness ...