Prescription Lenses That Are As Unique As You Are.

No matter what your eye condition, or how you choose to view the world, there are now prescription lenses that meet your unique lifestyle and vision correction needs.

Lenses that change as the light changes, from clear indoors to dark outdoors. Bifocal lenses that provide multiple fields of vision. High-index lenses that are thinner and lighter than ever before. And progressive lenses that eliminate the traditional lines of multi-focal lenses.

The point is, while eyeglass lenses are prescribed to correct all kinds of vision problems, prescription lenses have come a long way—offering you the opportunity to truly customize your eyeglasses and make a statement about how you choose to look at the world.

Common prescription lenses abbreviations.

While not all eye doctors use the same abbreviations, here is a list of commonly used terms you’ll often find on a slip for prescription lenses.

• O.D. stands for "Oculus Dexter", which is Latin for "right eye"
• O.S. stands for "Oculus Sinister," which is Latin for "left eye"
• D.V. "Distance vision" relates to far-sightedness — a condition where distant objects are seen clearly, yet objects close up are seen less clearly.
• N.V. "Near vision" relates to near-sightedness — a condition where near objects are seen clearly, yet objects in the distance are seen less clearly.
• SPH stands for "sphere", and corresponds to numbers that indicate the degree to which a patient is near-sighted or far-sighted
• CYL means "cylinder", and corresponds to numbers that indicate the amount of astigmatism present in a patient's eyes. Astigmatism is an eye condition resulting from an irregular curvature in the eye, causing mild, moderate or severe blurred vision.
• AXIS corresponds to numbers indicating the orientation of astigmatism in the eyes — how and where the irregular curvature occurs.
• PRISM is a prescription element that's added if your eyes need help either working more effectively together, or staying in proper alignment.
• PD stands for "Pupillary Distance", and measures the distance between your pupils (in millimeters). This measurement helps ensure your prescription is properly placed in your frames.
• Seg Height is a measurement of where your lenses and frames sit relative to your pupils. It is important when fitting multifocal (bifocal, trifocal or progressive) lenses.