I just learnt a new trick which will come in handy when playing against a Nocturne. When he uses his Paranoia (ult) and you get nearsighted, you can use the the "F" keys to centre your camera on your allies. This allows you to to determine where your allies are, even though you have no vision of them. By default, the keys are F2 - F5.It is also great tip in general to quickly look at other lanes when you aren't actively doing anything (eg. walking to lane, farming jg camps, etc.)Hope this helps!