Intraocular lenses.

I have again reviewed the current state of the art in intraocular lens design in what has been a year of consolidation rather than dramatic discoveries. In foldable lenses, silicone reigns supreme, but there is the promising development of high-refractive-index foldable acrylic lenses. Heparin surface modification is now accepted as valuable in high-risk eyes, but there remains a question mark over surface passivation value. Small-incision lenses continue to proliferate with the design of new haptics to facilitate insertion after circular tear capsulorhexis. Some doubt has been raised concerning the optical qualities of ovoid lenses. Anterior-chamber myopic lenses for phakic myopic patients remain controversial. However, an increasing volume of data concerning their advantages and disadvantages is now available.