Months or years after surgery, a secondary cataract may form. It's caused by cells that grow between your new lens and the capsule that holds it. It's not painful. But it may cause vision problems similar to the first cataract. Examples are blurry vision or increased glare off of lights. In most cases, a secondary cataract can be treated in your eye health care provider's office or at an outpatient surgical center.
Laser treatment (YAG capsulotomy) can be used for this. It's a painless procedure. It takes only a few minutes. Your pupil is dilated, and a laser beam is used to make an opening in the capsule that holds the new lens. This allows more light to enter. It will improve your vision right away.