What best describes FT-28 bifocals?

FT-28 bifocals are specifically designed with two distinct focal points. This style features a segment at the bottom of the lens that provides a different prescription for near vision, making it easier for wearers to see objects up close, while the upper portion of the lens is set for distance vision. This dual focal point arrangement is characteristic of bifocals, enabling individuals to transition between the two types of vision seamlessly.

Each type of lens serves a particular purpose; the upper part is for distance sight, such as when driving or watching television, while the lower segment assists with reading or other close-up tasks. The FT-28 bifocal format is recognized as an effective solution for presbyopia, where individuals often require different prescriptions for near and far vision.