A2Vision Top
A very popular A2Vision design, Top is a strong performing basic progressive lens, providing wide and balanced fields of vision. Greater bias is given to the wider viewing zones, for far reaching vision perfection.
Optimised for Wider Vision Zones
Design Features
Panoramic Bias
Greater bias is given to the wider viewing zones, for far reaching vision perfection. Due to the prioritising of wider fields of view it provides improved reading vision.
Variable Decentration
Enables the use of smaller diameters, reducing the lens thickness for plus power lenses while also decreasing waste and generating times.
OptiEdge
Calculations are made to ensure full prescription in the central area of the lens, while a blended region is applied to the edge for minimising material thickness. Improves appearance of higher powered minus lenses by flattening their outer edges and making them lighter and thinner. For plus power lenses, the advantage of OptiEdge is a reduced centre thickness and weight of the lenses.
Addition Range
0.75D to 3.50D
Indices
Full range of indices
Corridor Range
12, 14, 16 and 18mm
Power Range
+18.00D to -20.00D, up to -8.00D Cylinder
Limited by machine’s capability
