The goal of cataract surgery is to correct the decreased vision that was caused by the cataract. During the surgery, Dr. Chu will remove the cataract and implant a new artificial lens called an intraocular lens (IOL). Cataract surgery will not correct other causes of decreased vision, such as glaucoma, diabetes, or age-related macular degeneration. Many people still need to wear glasses or contact lens after cataract surgery for either near and/or distance vision and astigmatism. An advanced technology presbyopia-correcting IOL can be implanted allowing more range of vision and spectacle independence.