Unique to Sussex Vision Classic Domiciliary with D.F.D.U. This unit has been manufactured using LED illumination. This ensures a brighter and more even coverage. The handle doubles up as a stand and/or wall bracket. We have designed this unit so that the snellen chart can be on fully, or either the top four or bottom four lines. The right hand side of the chart can also be controlled in this way (concentric circles and/or duochrome or DFDU) Instructions, power supply and remote control are supplied as standard