Cd If it doesn't help the viewing of the movie, open the door blow in it either with your mouth or with a blowdryer.
blow dryer If that doesn't help, take a screwdriver and open the top of the dvd and carefully remove the lens cover. (Be very careful when opening the dvd, it must be unplugged.)
Cotton swab Take a cotton swab with a bit of alcohol and pass over it. Put the cover back on the dvd.
