Once the natural lens is removed, it cannot be reversed. However, if one is over 40 and dependent on reading glasses or bifocals, the lens is already not normal. It has lost its accommodation (focus) ability.
If the patient desires, the multifocal lens implant can be removed and replaced with a single vision monofocal IOL for distance vision only and reading glasses. If removal is considered this should be undertaken sooner rather than later. Additional risks and costs may apply.