after getting paint on my lens, it is really hard to clean it on the field between game. I normally just use water and a cloth but seems like is not good enough and oily stuff still on the lens makes a mess and unclear.
Uhm. Well does your mask allow you to remove the lens? With my E-vents' I just pop the lenses out and spray some water on them and whip it down, pop them back in and go out again. If you cannot remove your lenses then the way your doing it is the best I can really think of. It may just be your lenses (if they arnt high quality). I'd invest in a good mask. If you can't see then you can't shoot anyone. You can get e'vents now for like $63.
'05 Planet Eclipse Ego.
68ci 4500psi Pure Energy Tank
Vlocity JR W/ Ganster chip
just find a clean spot on your sleeve, and/or rag, and rub your lense in little circles...
That method has never failed me in my years of playing... The clean sleeve/rag, and little circles are the key.