Front Surface Aspheric Design
The
Asphero-F is a simultaneous-vision multifocal design that combines a spherical
back surface with a low-eccentricity aspheric front curve.
This design provides progressive add power from the center of
the lens to the periphery, offering a valuable alternative to the fitting
challenges that can arise with concentric, tangential and crescent-segmented
translating designs.
While this lens requires absolute centration to produce the
simultaneous-vision effect, it produces good intermediate acuity.
As a result, this lens is often preferred by patients whose professions
or lifestyles cause them to spend time reading computer screens.
Base Curve: 6.50 mm to 8.44 mm
Distance: -20.0 D to +6.00 D
Add Power: +0.75 to +3.00 D
Danker Laboratories
The RGP Multifocal Specialists
(800) 237-9641