Posts Tagged ‘glasses’



What important invention happened on May 23, 1785 and by Whom?

Answer:   The invention of the Bifocals was announced on May 23, 1785 by Benjamin Franklin!     To learn more about Benjamin Franklin and his bifocals, check out this article!   http://www.antiquespectacles.com/topics/franklin/franklin.htm  

Think About It Thursday: Why Do Some People Need Glasses?

On an eye chart each line  has been assigned a number. During the eye test, patients will close or cover one eye and try to read each line of the chart until the letters become too small to read easily. If you can read the line labeled 20 from a distance of 20 feet, this […]