Comparison of the Hoya Surgical Optics (HSO) iSert 251 Posterior Chamber Aspheric Aphakic Intraocular Lens to Historical / Literature Controls.

Inclusion Criteria: * Have been diagnosed with cataract for which phacoemulsification extraction and posterior chamber IOL implantation is indicated * Have clear intraocular media * Have potential Best Corrected Visual Acuity of 20/40 or better * Have preoperative Best Spectacle-Corrected visual acuity of 20/40 or worse Exclusion Criteria: * Have ocular pathology or abnormalities that do or are expected to reduce best corrected visual acuity in the operative eye during the study period * Are monocular * Have current ocular infection * Are taking systemic steroids or other anti-metabolites * Have previous retinal detachment in the operative eye or expect to require retinal laser treatment during the course of the study Eligibility criteria not complete. Contact Hoya Surgical Optics, Inc. for more information.