HOW TO KNOW YOUR SPECTACLES SIZES
Your Existing Eyeglasses
Most of the frames have size mentioned on the inner side of its temple (the long stems of the frames that connect the front of the eyewear to the back of your head). There will be 3 number sizing code in the following format.
Lens Width: It is the horizontal length of each lens.
Bridge Length: It is the distance between both the lens of the spectacles. It sits on our nose and is sometimes termed as nose bridge.
Temple Length: It is the arms of the spectacles that helps to hold your spectacles at its place.
All the dimensions in this 3 number sizing code are in millimeters.
You can purchase the new pair of eyeglasses on basis of the above sizing code
By using Credit Card or Debit card
A standard debit card or credit card can help you identify the frame size. The width of the card is approximately of a medium-sized spectacles. To measure the size, hold the card vertically in your hand.
Please one end of it on the center of your nose. If the other end of the card ends approximately till the end of your eye, then medium frame will fit you. If it ends before the end of the eye then the large frame will fit you. If it ends after your eye then small frame will fit you.
Lens width is used to determine the frame size. Size Guide is below
47 MM AND BELOW
48 MM-55 MM
ABOVE 55 MM