Home > Eyewear Guide > Easy Guide to Ordering Glasses

Follow these 4 easy steps to find the eyeglasses or sunglasses size and shape that will fit you best. If you are still feeling lost, contact us to answer any questions you may have.

Eyewear Measurement GuidePrevious Eyeglasses Wearers: Look at the arm of your old frames for sizing measurements. Find the Model Number, Eye Size, Bridge Size and Temple Length to order new frames in the same or similar size. See image for reference.

New Eyeglasses Wearers: Welcome to the world of optics! For the most accurate measurement, you will need to try on frames at your eye doctor's or at an optical shop. In general, adults fall into three ranges of widths/eyesizes:

  • Small (45-49 mm, or 50-55 mm for sunglasses)
  • Medium (50-55 mm, or 55-60 mm for sunglasses)
  • Large (56 mm and up, or 60 mm and up for sunglasses)
Tip:Every frame page will display "Size Information", use your measurements to find properly fitting frames.

Asian Fit Face Shapes GuideNow that your know the frame measurements that fit you'll want a frame style that compliments your face shape. Pick which face shape below most closely matches your own (if you are unsure you can always email us your picture).
Knowing your face shape tells you which frame style will look best on your with these general guidelines:

Square Shaped Face

Choose: oval and round frames

Heart Shaped Face
Choose: narrow, round or oval frames

Oval Shaped Face

Choose: most styles, especially rectangular frames

Oblong Shaped Face
Choose: tall and wide, bolder frames

Round Shaped Face
Choose: rectangular and wide frames

Your prescription may look like it's in a different language but it's pretty straightforward. Let's translate it! Please note, we do not fill bifocal or progressive lens prescriptions online.

Sample Rx:

O.D.: Right Eye
O.S.: Left Eye
SPH: spherical refractive error; (+) indicates farsightedness, (-) indicates nearsigntedness, PL or plano means no SPH
CYL: cylinder, or astigmatism; if left blank or DS written in this space there is no astigmatism
AX: axis of the astigmatism; if left blank there is no astigmatism
PRISM: only indicated in special prescriptions
ADD: only indicated if a reading or bifocal presciption is needed
PD: pupillary distance, the distance between the pupils of the eyes, measured in mm (millimeters)

Selecting a Lens Material:

TC Charton Naoko Women's Eyeglasses
Selecting a lens material mainly depends on the strength of the prescription. For mild prescriptions (less than +/-2.00), polycarbonate works well. For moderate prescriptions (less than +3.00 or -6.00) and high prescriptions (above +3.00 or -6.00), 1.67 or 1.74 high-index lenses are recommended.

We STRONGLY recommend polycarbonate lenses for the following: active people (i.e. athletes), those under age 18, those with only one functioning eye or with serious eye disease, and those working in law enforcement or with machinery. However, these glasses are not intended to be a substitute for sports safety eyewear or occupational safety glasses.

Lens Coatings:

All lenses include a scratch-resistant coating (NOT scratch-PROOF) with a one-year warranty. All lenses also include UV400 protection. An optional but beneficial coating is the anti-reflective/no-glare coating (basic and premium options available), which is a clear coating placed on lenses to help reduce glare and reflections, resist smudges and dust, and improves the appearance of lenses especially in moderate to high prescriptions.

Lens Tints and Transitions:

All of our eyeglass frames can be made into prescription (or non-prescription) sunglasses with the addition of tint or Transition lenses. Most popular tint colors are dark gray or dark brown, and help reduce sunlight glare, but are not recommended for use at nighttime.

Shop Frames by Size: Women / Men