(c) If, after passing the outer marker or equivalent position in accordance with (a) above, the reported RVR/visibility falls
below the applicable minimum, the approach may be continued to DA/H or MDA/H.
you can continue and land if the RVR falls below the minimum and you have already passed the outer marker. Since there is No DH there is no Go around "decision" to be made (ie there is no requirement for visual reference for landing). RVR for Taxi is another story.
If you consider the above scenario for a cat 2 or cat3a or cat 3b with DA(H) there is no requirement for an immediate Go around if the RVR dropped below the minimum after the OM. you are allowed to simply fly to the minima, see if you have the required visual reference and if you do you can land (even though the RVR stays lower than the requirement all the way from OM to touchdown). same applies to a CAT3B with no DH. Fly to the DH (zero).