This type of lens implanted in the eyes and that is used to treat cataracts or myopic. Whenever patients undergoes cataract surgery, they have 2 options either goes for contact lens or intraocular lens. There are so many types of intraocular lens which depends on patients condition whether farsighted or nearsighted or so many other factors. pseudophakic IOL is the most common type of Intraocular Cataract Lens. To determine the power of the new lens, a number of intricate mathematical formulas are used to calculate the power of the lens implant.