Astigmatism is the cylindrical component of the shape and number of the eye. If you are planning a cataract surgery and have high astigmatism, you may be required to correct this in addition to the conventional spherical power intraocular lens, to ensure better clarity post-surgery. These lenses are called TORIC LENSES. They are available in Monofocal and Multifocal varieties. If the cylindrical power is left uncorrected, the person may require glasses to improve clarity in vision even after removal of cataract.