During cataract surgery your
ophthalmologist will make a small opening in the side of your cornea. He or
she will insert a pen-shaped instrument through the opening to reach the lens.
This instrument uses a special type of energy to break up the center of the
cloudy lens. Then it will carefully suction out the lens pieces. Your surgeon
will then insert an artificial lens called an intraocular lens or IOL. This
IOL will stay in your eye permanently. The new lens lets light pass through and
focus properly on the retina, bringing back clear vision.