What do the markings on prescription lenses mean?

Answer by  MedStudent01 (1131)

The numbers refer to sphere, cylinder, and angle of cylinder. These are measurements of how the lens is shaped numerically.

Answer by  Meghan23 (69)

These markings are used to ensure that the glasses fit each individual properly with the correct prescription. Their main purpose is to determine the strength of each individual pair of eyeglasses so that every person receives their desired strength this way they have the ability to see as much as they can.

Answer by  eiryck (847)

The markings on the lenses are a sort of codes representing the status of your eyes. The first line represents the right eye while the second line represents the left eye. Decoding the characters in a column manner, each column represents information like nearsighted or farsightedness and presence or absence of astigmatism.

Answer by  renee (354)

Progressive lens are made with the perscrition for the bifocals power on the lower right hand of the lens. It helps to know what strength of bifocal your wearing.

Answer by  mani (813)

First number having have a plus sign(+) or minus sign (-) is the power of sphere. If the sphere power is 0. 00 it will be denoted with symbol ∞