Hi, friends
According to OPS 1.405:
The Commander, or the pilot to whom conduct of the flight has been delegated, may commence an instrument approach regardless of the reported RVR/Visibility but the approach shall not be continued beyond the outer marker, or equivalent position, if the reported RVR/visibility is less than the applicable minima.
If, after passing the outer marker or equivalent position, the reported RVR/visibility falls below the applicable minimum, the approach may be continued to DA/H or MDA/H.