Cloudy patches. Remove the front element. The decorator ring with the lens info will unscrew. It has spanner slots on it 180 degrees apart. You can use a large rubber stopper from the hardware store or take an old pair of needlenose pliers & grind the tips down to fit the slots.
Once the decorator ring is off you can see if there's another ring holding the front element. If there is you should already have the pliers to fit the slots.
Remove, clean & reassemble.