DuraVolume is introduced to extend the visual field in depth and width; its technical guide defines near working distances of 40–70 cm.
Extending the visual field in depth and width
Considering the volume of the visual field
DuraVolume considers visual-field depth as well as width. Durabon's guide introduces it as extending field volume so both dimensions are considered in the design description.
Near working distances
The cited technical sheet defines near working distances of 40–70 cm. This is a near-distance range, not field width, distance-vision range or addition power.
Read the wearer's near-task distance alongside the model's stated range. It is measured in centimetres and differs from prescription power, measured in dioptres.
Featured in SlimMax
The guide refers to SlimMax's catalogue page for DuraVolume. This does not establish use in all office or Durabon lenses; check each model's own specifications.
Featured product
Scope of published information
No independent numerical percentage is given for increased visual-field volume or width. The 40–70 cm range is working-distance data, not that performance metric.