hey hey don't bother the lens.. let it work as it is.. it would only get worse if u would try to play with it... lens is the most important part of a console.. just keep it safe by:
-Keeping the console away from dust
-DO NOT put dusty disks inside the tray
-Try to put scratch less disks
-Try to use original or Malaysian disks only- rewritable disks are shitty
-Best if u install and play the game
all these things would inshALLAH increase the life of the lens
hope this answers the question (despite of the wrong section)