• Single Vision - Single vision occurs when an individual is near sighted or far sighted, but not near sighted and far sighted.
  • Bifocal FT-28 - A lens with two points of focus - usually one for distance and one for near vision. Bifocal portion of lens is in the shape of a half moon.
  • Bifocal FT-35 - Bifocal FT-35 A lens with two points of focus - usually one for distance and one for near vision. Bifocal portion of lens is in the shape of a half moon. Similar to Bifocal FT-28, only with a wider bifocal portion. The Bifocal FT-35s bifocal portion is 35mm wide. The Bifocal FT-28s bifocal portion is 28mm wide.
  • Progressive Bifocal - A no-line multi-focal lens that includes all corrections, from distance to close-up, in one lens without any separation of the visual zones by a line.