I do not know the measurements they are small I'm a grown man and they do not fit me. There is a number 46 marked on one of the top of the lens.
They have bifocals on the bottom of the lens I cannot tell you what strength the lens are at all. This item is in the category "Clothing, Shoes & Accessories\Specialty\Vintage\Vintage Accessories\Eyeglasses". The seller is "na1990" and is located in this country: US. This item can be shipped to United States, China, Mexico, Germany, Japan.