HOW TO UNDERSTAND PRESCRIPTION TERMS
Sphereis the amount of Near-sighted or Far-sighted correction.
(+) Plussign signifies that the individual is FAR-sighted.
(-) Minussign signifies that the individual is NEAR-sighted.
Cylinderis the AMOUNT of astigmatism in each eye.
Axisshows the LOCATION of the astigmatism in each eye.
Addrefers to how much power is added on for a bifocal or progressive lens, and is also commonly referred to as ADD Power.
Prismis the direction and quantity of shift in image correction to align the eyes.
