Accomadating iol europe
(Very similar in design, the FDA allows Crystalens to be called “accommodating” but only allows Trulign to be described as offering “a broader range of vision.”) Both are mechanical IOLs because accommodation is powered by action of the ciliary muscle as opposed to, for example, electricity.
The lens contains a rechargeable battery and changes focus based on physiological triggers.That is not enough to give patients good distance and near vision, although it may suffice for good distance and intermediate vision.Some critics claim that a single-optic IOL can’t possibly move enough with the eye to produce a substantial change in power.THE PENDING Tetraflex (Lenstec) is a mechanical accommodating IOL with a single, square-edged, acrylic optic that flexes to provide accommodation. The Tek-Clear IOL (Tekia) is another square-edged, single-optic mechanical accommodating IOL that moves in response to natural movement of the ciliary muscle.It received a CE mark in 2006, but is not yet FDA-approved.In April 2011, Alcon was acquired by Swiss-based Novartis.
The company declined to invest in a subsequent round, and Elenza has claimed Novartis is attempting to “exploit the technologies invented by Elenza and to capture for itself 100 percent of the anticipated revenues from the commercialization of Elenza’s technologies.” The matter is in litigation.
Typically, the eye’s “focusing” or ciliary muscle powers the movement or shape change.
Currently approved accommodating designs cause less loss of contrast sensitivity and are less likely than multifocal IOLs to produce glare and halos.
Multifocal IOLs incorporate discrete optical elements into the lens to offer both near and distance vision.
This design strategy trades off some of the benefits of seeing through a single zone in order to have a greater range of focus. While many multifocal patients can read without glasses, their distance vision may not be as sharp as it might be with a monofocal IOL.
In 2010, Bausch Lomb introduced the Crystalens Aspheric, which has an optical design that gives it improved contrast sensitivity and reduces higher order aberrations.