When we do cataract surgery we leave the membrane that used to surround the
old lens in place. This membrane is clear like cellophane and acts as a
container for the new implant. Years after cataract surgery this membrane
can get cloudy and blur vision. This problem is easily corrected with a 15
second nonpainful procedure by making an opening in the membrane with a YAG
laser. This is called a YAG capsulotomy.