The document summarizes the history and generations of intraocular lenses (IOLs). It discusses the first IOL implanted by Sir Harold Ridley, made of polymethyl methacrylate (PMMA). Later generations included foldable materials, multifocal IOLs, and accommodating IOLs. Premium IOLs now offer features like toric designs to correct astigmatism and aspheric optics for better vision quality. While multifocal IOLs provide simultaneous distance and near vision without glasses, they can cause visual side effects like halos and reduced contrast sensitivity. Accommodating IOLs aim to restore a degree of natural accommodation but may not provide fully unaided near vision for small print.