Headlamp assembly

I noticed condensation after a heavy rainstrom on inside of the left side headlamp assembly of my 2002 Camry.  There are no visible cracks or damage to the assembly.  Is there a vent which might be clogged?  Can anyone offer instructions on removing the headlamp assembly so I can inspect the unit and replace it if necessary?

Thanx,
K

have you recently replaced the bulb...maybe the boot for the bulb  is installed incorrectly... if the boots ok..there may be a leak along the seam of the glass...