Traditional Single Vision Lenses
are for SPH (Sphere) powers less than +/- 1.75.
Digital Single Vision Lenses
(Biker Recommended) are the most accurate lenses and help eliminate distortion & dizziness. Always use Digital Lenses if your SPH (Sphere) power is +/- 1.75 or greater.
Digital Progressive Lenses
are a multifocal lens to see distance, mid-distance, and reading; without a visible transition line.
Digital Sport Progressives
designed for bikers & active sports to enhance long distance vision & mid distance vision 3 to 16 feet in front of wearer. You can also see close distance (less than 3 feet) to read, but this viewing area is smaller compared to Digital Progressives.
FT 28 BIfocals
have your distance prescription on the top of the lens & a semi-circular area on the bottom of the lens for reading small print. There is a smooth visible line dividing the two areas of the lenses.