The intraocular lens that replaces your clouded lens is impervious to the same conditions that caused cataracts in the first place. You won't "grow" new cataracts. However, there is a condition called "secondary cataracts." This refers to clouding that mimics that of cataracts. It occurs in the treated eye and involves not the lens but the membrane in which the IOL has been situated. "Secondary cataracts" are a condition also known as posterior capsular opacification, and can be treated as needed to restore visual clarity.