by Erinn Morgan

Ever read the size numbers inside a frame temple and wonder what they
mean? Optometrist Dr. Burt Dubow explains, using 48-19-140 as an
example:
   "All frames have standardized size measurements to help
manufacturers and optical personnel fit them for consumers: The first
number, 48, represents the size of the lenses. The second number, 19,
is the bridge size, which ensures that the frame fits your nose. The
third number, 140, is the temple length (temples are the parts that
hook over the ears).
   "Each person is shaped differently, of course, and requires
different frame measurements. To make it more complicated, frames vary
by their shapes and sizes, so there is no set of numbers that would
apply to one person for all frames. Each frame must be fitted
individually.