New digital lenses change the way we see

Bif: “Boy, do I feel dizzy!” Calli: “You been drinkin’ again?” Bif: “No.” Calli: “Get in an accident?”

Bif: “No.” Calli: “ Are ya sick?” Bif: “No, I jus got my new glasses.”

Have you heard of the new digital lenses that are available? For the first time in 50-60 years the way lenses are ground to make the prescription is different.

The power of a lens is due to three things: one, front lens curvature, two, lens density and three, back lens curvature.

Originally the main curvature was ground on the front lens surface. Later it was found that putting the main curvature on the back surface reduce...