The Icolens (Neoptics, Hunenberg, Switzerland) is a 3-mm-diameter multifocal corneal inlay made of a hydrophilic acrylic hydrogel. The central zone has a diameter of 1.8 mm, an edge thickness of ...

In peripheral presbyLASIK, the peripheral cornea is ablated so as to create a negative peripheral asphericity which in turn increases the depth of focus. Thus, the center of the cornea is left for ...