The Visian ICL™ by STAAR Surgical is an insertable contact lens used to correct myopia (nearsightedness) in adults aged 21-45 without altering the corneal tissue. It is the only minimally-invasive foldable lens available in the U.S. Made of a patented collagen-containing material called collamer, the Visian ICL is highly biocompatible, meaning it can be implanted in the eye with minimal risk of rejection.
Under topical anesthesia, the ICL and a gel-like substance is placed behind the iris through a tiny incision in the cornea. The gel is then removed. The procedure takes about 15 minutes and no stitches are required.
The ICL's location allows it to provide excellent quality of vision and also ensures that it is invisible to others. The ICL can be removed or replaced at any time, and patients can wear glasses or contact lenses or choose to have other procedures done with the ICL in place.
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The first and only FDA-Approved accommodating Lens. The Crystalens® accommodating lens delivers comprehensive vision quality without compromise. Unlike other lens technologies that may ask you to sacrifice near or intermediate vision, crystalens uses 100% of the available light rays at all distances - near, intermediate and far - so your life is always in focus.
The Crystalens® accommodating lens takes its design cues from a single source - nature! Working in concert with the eye's natural muscle, crystalens "flexes" to accommodate near, intermediate and distance subjects. No lens comes closer to mirroring the function of the natural lens. More than twice the number of patients implanted with a Crystalens could see at all distances compared to a standard IOL.
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For years, patients who underwent cataract surgery had to wear glasses or contact lenses afterwards to see clearly. The newly developed ReSTOR® lens has overcome this problem, allowing patients to see better than ever before -- without the help of corrective eyewear. The ReSTOR® lens improves upon ordinary cataract replacement lenses (IOLs) by providing comprehensive focusing capabilities so patients can see clearly in a range of lighting conditions and at all distances -- at noon or midnight, nearby or far away, and anywhere in between. Up to 80% of patients who use the ReSTOR® lens don't need to rely on glasses or contact lenses after surgery.
Flexible IOLs have been used for years to help patients enjoy clear vision after cataract surgery. The advanced ReSTOR® lens improves upon ordinary IOLs by providing a full range of focusing distances. A series of 12 gradual "step heights" create seamless focusing ability from near to far, while the edge of the IOL enhances distance vision. A feature called apodization also helps the eye distribute light evenly in different lighting conditions. Best of all, up to 80% of patients who use the ReSTOR® lens don't need glasses or contact lenses after surgery.
As we perform daily activities such as reading, watching television or working at the computer, our eyes are constantly focusing on objects at varying distances – up close, far and everything in-between. The ability to quickly change focus throughout this range of vision is called accommodation. Unfortunately, this ability diminishes as we grow older 1 , causing us to become dependent on bifocals or reading glasses. However, the AcrySof® ReSTOR® IOL was designed to provide quality near to distance vision by combining the strengths of apodized diffractive and refractive technologies. Similar technology has been used for years in microscopes and telescopes to improve image quality, and has now been patented for use in intraocular lenses by Alcon.
1 Lee, Judith and Bailey, Gretchyn. Presbyopia. AllAboutVision.com. Access Media Group: 2004.
Apodization is the gradual tapering of the diffractive steps from the center to the outside edge of a lens to create a smooth transition of light between the distance, intermediate and near focal points. Diffraction involves the bending or spreading of light to multiple focal points as it passes through the lens. On the AcrySof® ReSTOR® IOL, the center of the lens surface consists of an apodized diffractive optic. This means that the series of tiny steps in that center area work together to focus light for near through distance vision.
Refraction: involves the redirection of light passing through the lens, to focus on the retina.
The refractive region of the AcrySof® ReSTOR® IOL bends light as it passes through the lens to a focal point on the retina. This outer ring of the AcrySof® ReSTOR® IOL surrounds the apodized diffractive region and is dedicated to focusing light for distance vision.
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