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 CONCORD HORIZON has been designed to provide
 undisturbed optics and a widened far vision
field.
 It allows maximum visual comfort by creating a  smooth progression of power through the lens.
 This gives new presbyopes wide intermediate  corridor and clear distance so they can adapt easily.  The fitting cross is 2 mm above the geometrical  center. Recommended minimum fitting height of
 18 mm.
 The lens will be available in three materials:

Material Refractive index Abbe value Specific gravity
Hard resin (CR-39) 1.498 59 1.32
HI-157 1.570 38 1.18
Photo Chromatic 1.56 37 1.19