Bifocal lenses are divided into two parts to accommodate a combination of any two different prescriptions into one lens. One area of the lens will have one prescription (usually distance) and a segment in the lower half will have the other (usually near vision).
We supply two types of bifocal lens. The D28 and the C28. The D28 Is 28mm in width and shaped like the letter “D”. The C28 is 28mm in width and shaped like the letter “C”.
We can also supply other types of bifocal lenses. Please contact us to discuss this further if you require further information. The two types we advertise are the leading industry standard.