I'm going to speculate that the 800m VIS is regarded as a state minimum, (perhaps by dint of being defined
here in line with ICAO Cat 1 definition), but that Jepp have calculated the RVR upwards (from the AIP-published 550m) for some reason, and have charted both together. RVR (or vis without conversion) would then be the compulsory minimum. One possibility is that this is from an operator-tailored chart. Or maybe <speculate> in Jeppesen's estimation the AIP minima are too low and don't meet PANS-OPS requirements.</speculate>
(
Per Jeppesen:)
If State minimums are officially published the depiction of AOM may differ from the standard depiction where all values are expressed as RVR or CMV.
1. If RVR/CMV and VIS are charted together, the RVR value is compulsory. If no RVR is reported, the VIS has to be used without conversion.
2. No prefix is charted if RVR/CMV and VIS is identical. The reported RVR is compulsory. If no RVR is reported, the VIS has to be used without conversion.
3. If only VIS is charted, the VIS has to be used without conversion.