The strength of prescription eyeglasses is measured in what unit?

More Questions:

In the card game Blackjack, what two values does the Ace have?

Vodka and orange juice make up what cocktail?

What author created Wonderland?

From what language did English borrow the word "honcho"?

According to the novel, about how long was Robinson Crusoe marooned on his remote island?

In what country would you find the active volcano "Lassen Peak"?

What prevents the Earth's atmosphere from drifting into space?

What is the name of Google's mobile operating system?

In the TV show "The Simpsons', what is the name of Lenny's ex-wife?

What was the first name of Frasier’s father on the sitcom “Frasier”?

What was Mary’s last name on "The Mary Tyler Moore Show"?

In the 2003 film "Love Actually', who played the role of Billy Mack?

In 1800, John Adams became the first US president to live where?

The Arc de Triomphe was originally built to commemorate France's triumph in what 1805 battle?

Who was assassinated by Leon Czolgosz?