High Definition and Extended Depth of Field Intraocular Lens

摘要

A virtual aperture integrated into an intraocular lens is disclosed. Optical rays which intersect the virtual aperture are widely scattered across the retina causing the light to be virtually prevented from reaching detectable levels on the retina. The use of the virtual aperture helps remove monochromatic and chromatic aberrations yielding high-definition retinal images. For a given definition of acceptable vision, the depth of field is increased over a larger diameter optical zone. In addition, thinner intraocular lenses can be produced since the optical zone can have a smaller diameter. This in turn allows smaller corneal incisions and easier implantation surgery.

主权项

1. An improved intraocular lens comprising:
an intraocular lens having a virtual aperture formed by a central optical zone formed integral into said intraocular lens, said virtual aperture is positioned in a periphery of said intraocular lens and connected to an optical zone by a transition region, and a haptic positioned in a far periphery and connected to said virtual aperture by said transition region, said transition region having a zero-order and first-order continuity of the surface on either side of said transition region; said virtual aperture having a sequence of high-power positive and negative lens profiles wherein light rays which intersect this transition region are dispersed widely downstream from the intraocular lens.