Astigmatism (uh-STIG-muh-tiz-um) is a type of refractive error where one or more of the eye’s surfaces are not smooth and/or round. It is broadly classified into two types: regular and irregular.

How is astigmatism measured? Optometrists usually detect and measure regular astigmatism during refraction, when they place different lenses in front of the eye to determine a spectacle prescription.

Medically reviewed by Christine L. Larsen, MD Astigmatism is a common eye condition that happens when the cornea, or lens of ...

How is astigmatism measured? Optometrists usually detect and measure regular astigmatism during refraction, when they place different lenses in front of the eye to determine a spectacle prescription.

'School Spirits' has promoted Ci Jung Ma and Miles Elliot to series regular, and added Jennifer Tilly, Ari Dalbert and Erika Swayze for Season 3.

Even though many of the habits that high IQ people stick to on a regular basis might seem obvious and intuitive, they have profound positive implications – not just on intelligence, but on ...

This week we're going to tackle the swing-off tiebreaker, and whether it belongs in more than the All-Star Game. Should MLB use a swing-off tiebreaker for regular season games?

Gregg Wallace has claimed that he was “touched and groped” on a regular basis while filming MasterChef. Earlier this month, a report was published into allegations of inappropriate behaviour ...

Twelve drivers have won this year to claim playoff spots. Four spots remain available via points with five races left in the regular season. Those four drivers in a position position without a win are ...

PGA Tour ends regular season in Carolina. LPGA wraps up major season with Women's British Open Story by Woad 'playing best golf of any woman in the world' 0:01 ...