Youth Prescription Eyewear Size Guide

Whether you are purchasing your child's first pair of prescription glasses or you are shopping for a replacement set for the pair your puppy shredded, we’ve designed this size guide to make purchasing your next pair of prescription eyewear online easier.

 


 

Frame Measurements

Every frame has 4 key measurements: eyesize, bridge width, temple length, and lens height. If you currently own a pair of sunglasses, you may find the first 3 measurements printed on the inside of one of your temple arms, or on the inside of the bridge. Not all frames include these measurements, and if that's the case, proceed to the next steps.

 

Because most manufacturers do not measure total width of the frame, for general reference you can double the eyesize, and add the bridge.

LENS WIDTH x 2 + BRIDGE WIDTH = ESTIMATED TOTAL WIDTH

We say general reference here because there are many variables that affect the total fit of sunglasses, especially ones with sports wrap. For wrap around sunglasses, while this method still works, you'll want to consider the curve of the frames because you'll notice that lens width is much larger than with flat eyeglasses. With the curve, you'd want a wrapped pair of sunglasses to be about 5-10mm larger than your eyeglass frames.

  


Measuring Existing Frames

Don't see any numbers that look like the ones pictured above printed on your child's current frames? No worries; let's measure the pair you have. You will need a millimeter ruler for this. If you don't have one nearby, download our printable ruler HERE):

 

 


No Frames To Measure?

Maybe this is your child's first pair of prescription eyewear. Maybe your son or daughter's last pair of specs endured an unexpected water burial at the lake last weekend. Regardless, you can still start fresh shopping online by using our handy size guide, in conjunction with our Face Shape Guide.

1. Grab a ruler with either inches or centimeters, preferably centimeters and preferably a flexible one. Don’t have one? Download our printable ruler HERE.
2. You will need to look in a mirror to measure the width of your face from temple to temple. This is where a flexible or printed ruler is helpful, and will provide the most accurate measurement. 
3. Use the following chart to translate your measurement into your ideal lens width: 

Temple to Temple Width in Inches

Temple to Temple Width in Millimeters

Suggested Eyeglass Eye Size

Suggested Lifestyle Sunglass Eye Size

Suggested Sport Sunglass Eye Size

3.25”

80mm

39-40mm

45-47mm

46mm+

3.50”

90mm

41-42mm

47-49mm

48mm+

3.75”

95mm

43-44mm

49-51mm

50mm+

4.00”

100mm

45-46mm

51-53mm

52mm+

4.25”

110mm

47-48mm

53-55mm

54mm+

4.50”

115mm

49-50mm

55-57mm

56mm+

4.75”

120mm

51-52mm

57-59mm

58mm+

5.00"

125mm

53-54mm

59-61mm

60mm+

Have additional questions on how to find the best size glasses frames for you? Call or email one of our Salt City Optics professionals at 1-888-507-1230 or info@saltcityoptics.com and we will be happy to further assist you.