An annular, aspheric bifocal lens. Annular means that the center portion of the lens is devoted to distance vision, while the outer portion deals with the near or reading power. Aspheric refers to the unique curvature on the back surface of the lens which is known as the “EQ”. The EQ is the outer portion of the lens where the curvature of the lens is chosen so the lens aligns comfortably with the mid-peripheral region of the cornea.
This lens is available in powers from + 12.00 to – 20.00 with add powers from + 1.75 to + 3.00 in 0.25 D. steps.
These lenses correct most corneal astigmatism.