Converting VIS to RVR
Have a look at the Jar ops section allowing you to convert Met Vis to RVR if you have certain lighting elements in operation. Depends if you are operating day/night. RVR always takes precedence but this gets you out of jail if it breaks down and you can only get a met vis and your minima are written reference RVR.
Not allowed for take off minima or CAT 2/3.