Accommodating iol synchrony
The lens and ciliary muscle are connected by a 360-degree series of fibers (called ciliary zonules) that extend from the ciliary muscle to the thin lens capsule (or "bag") that encloses the lens.The ciliary muscle, ciliary zonules and lens capsule keep the lens suspended in its proper position inside the eye for clear vision.In a normal eye (without presbyopia or cataracts), this dynamic process of accommodation adjusts the focusing power of the eye by changing the thickness of the eye's natural lens.When the ciliary muscle is relaxed, the lens flattens to enable clear distance vision.That said, most people who choose one of these accommodating IOLs are very pleased with the greater freedom from eyeglasses they have after cataract surgery.Another type of presbyopia-correcting IOL that is an alternative to accommodative IOLs is the multifocal IOL category.Crystalens and Trulign Toric accommodating IOLs are premium intraocular lenses and therefore cost more than conventional monofocal IOLs.Also, the added cost of these presbyopia-correcting IOLs typically is not covered by Medicare or private health insurance.
The Crystalens (Bausch & Lomb, Aliso Viejo, CA, USA) is the only FDA approved 'accommodating' lens to correct presbyopia in patients with cataracts.All IOLs have a central optical zone, with peripheral "legs" (called haptics) that secure the lens implant inside the lens capsule.The primary difference between a conventional monofocal IOL and an accommodating IOL is the design of these haptics.This is why they are classified as "accommodating IOLs."Both lenses are manufactured and distributed by Bausch Lomb.Accommodation is a process that enables the eye to adjust its focusing power to provide clear vision at all distances. Accommodation is made possible by the lens inside the eye and the circular muscle that surrounds the lens, called the ciliary muscle.