Visionix VX40 - How to Change Cylinder Convention?; How to Change Map Type?; How to Change Lens Type?

How to?
VX40 User Guide
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6.3 How do I change the cylinder convention?
In the settings screen
 Click on Tools button
 Click on Settings button
 Change the cylinder convention (see also 5.2).
Note:
The convention you choose in the settings is the default convention when you start
the device. You can change the convention in other screens.
On the main screens
 Click on Cylinder convention button
6.4 How do I change the map type?
Measured lenses can be displayed with different maps: sphere, cylinder and
prism. By default, the prisms map is displayed for single vision lenses and the
cylinders map for progressives.
To change the type of map:
 Press the button .
 Select the map you want to display.
6.5 How do I change lens type?
The VX40 detects the lens type automatically.
In case you need to change the lens type manually:
 Click on Lens Type tool
The following popup menu is displayed:
 Single Vision
 B-focal
 Multi-focal
 Reading lens
Note:
Reading lenses are not detected automatically by the device; you have to impose
this type manually to effect measurement.