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Crystalens and Trulign Toric are premium intraocular lenses (IOLs) that correct presbyopia as well as common refractive errors, enabling an expanded range of clear vision and a decreased need for eyeglasses after cataract surgery, compared with surgery performed with conventional monofocal IOLs.
Currently, Crystalens and Trulign Toric IOLs are the only FDA-approved presbyopia-correcting IOLs for cataract surgery that improve near vision by a focusing process called accommodation.
This is why they are classified as "accommodating IOLs." Both lenses are manufactured and distributed by Bausch Lomb.
Accommodation is made possible by the lens inside the eye and the circular muscle that surrounds the lens, called the ciliary muscle.
The quality of the retinal images produced by a multifocal IOL depends on multiple variables, said Kenneth J.
Hoffer, MD, the Santa Monica, Calif., surgeon whose credentials in ophthalmic optics include development of the Hoffer Q formula for calculating IOL power.
Which IOL has the fewest problems with halos and glare at night?
Here’s a look at three of the newer multifocal IOLs in Europe, along with an update on some other intriguing designs in the pipeline.
Accommodating IOLs One approach, accommodating IOLs, tackle the problem differently.
Instead of placing multiple focusing elements in a single fixed lens, most accommodating lenses change focus by utilizing a single optical element that moves like a camera lens or alters shape.
Contraction and relaxation of the ciliary muscle changes the tension in the zonules, which in turn changes the shape of the lens to provide the correct focusing power for seeing objects at all distances.Tags: Adult Dating, affair dating, sex dating