Additional information
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Home » Eyeglasses » Ray-Ban » Ray Ban RB5311
Hand-picked by our frame experts, the prestige line compiled of eyewear that has been tested to excel high standards and quality. This eyewear line, recommended for all as the primary pair of prescription glasses that is not only unique in design but can rest assured to last.
Check size on your frame
Most frames have size displayed on the inside of the frame arm
Or use a ruler
Use a ruler to measure your existing frame as shown below. Frame sizes are measured in millimeters, so you need to use a ruler that is marked in centimeters and millimeters. If you don't have millimeter ruler, you can click here to print it, or take measurements in inches. Note that measurements in inches need to be taken with the precision of 1/16 (one half of 1/8 if your ruler does not have more precise markings)
I got it! Here is My Size
Measure your PD
In some cases your vision correction doctor may forget to give you your PD (pupillary distance). The best option will be to ask your doctor to measure it. It is part of your prescription and an eye doctor needs to provide it.
If this is not possible, you may use the methods listed below.
The easiest way:
1) Wear any glasses with clear lenses.
2) Use a mirror or ask a friend or family member to mark your pupil location on
the clear lenses using a dry erase marker. They must stand in front of you and
be at the same height as yours. If you use a mirror make sure you stand 3ft
from the mirror and your general stare is directed to the center of the glasses.
3) Using a ruler with a millimeter range, measure the distance between the two dots and that’s your PD
If you don’t have in your possession glasses with clear lenses, you may measure your PD using this method:
1) Obtain a ruler with millimeter values
2) Place the ruler horizontally on your nose bridge, zero slightly below your right eye;
3) Ask a friend or use your mirror to see the distance on the roller. The distance measured is your PD.
Although we don’t recommend this option, if you are unable to use the methods above, you may use the general PD for: Women 62 and Men 64.
