Spectacles On Line

I need bifocals and the problem is with the entrance near vision. The values in boxes on my prescription Sph 4.50 and 7.50 for right and left respectively, but the menus on the websites only go to 3.50. So I see the previous requirement that the values are much lower than 1.75 for both R and L. I do not think my vision has changed considerably. Can anyone help a confused old man?

It looks like a limitation of the site (s), not the user (you). I think it's best to find the "contact us" area of the site, and call their support line for customers to place your order. If, indeed, they can not do your specifications, support agents will be able to tell you. It is possible that there is (was) an error on the page.

Try it here:
http://www.amazon.com/gp/redirect.html?i ...
Or try searching eBay
http://rover.ebay.com/rover/1/711-53200- ...
Good Luck