How are bifocals made?

Answer 1

Bifocals are made by combining two different prescriptions into a single lens, typically featuring a distinct line that separates the two optical zones. The top portion of the lens is designed for distance vision, while the lower segment is for near vision, often used for reading. The process involves precise measurements of the wearer's eyes and prescription, followed by cutting and shaping the lenses from raw optical materials. Finally, the lenses are polished and mounted in frames that suit the wearer’s preference.