I disagree there. You may have to land this thing in 550m vis. Looking towards the end of the runway in those conditions is next to useless, you wont see it and all depth perception will be lost. What you need to do is bring in your peripheral vision to help estimate closure rate, how you do that is up to you. I find the RA count down helps, but really you're using all your senses to feel what the aircraft is doing in a very dynamic environment.