Crystalens is a kind of intraocular lenses, which is usually called IOLs for short. Crystalens is an artificial crystal lens used to replace human eye’s natural lens, which is usually removed during eye surgery, such as cataract surgery. Crystalens will flexes when you focus your vision, which allows the optic or the central circular part of the lens to move back and forth to focus on images that around you. So crystalens was introduced as the first presbyopia correcting crystal lens.
Prior to the development of crystalens, patients undergoing cataract surgery had to wear very thick glasses or specially made contact lenses to substitute for their missing natural lenses. Then comes a kind of crystal lens -- monofocal, a traditional IOLs, which can improve one type of vision, either near, intermediate, or far. Glasses were still needed for some conditions, for instance, reading or close vision. After monofocal developed multifocal crystal lens and accommodating crystal lens which lead people to see well at all distances without contacts or glasses.
Crystalens is a multifocal IOL first used in 1960s, and it is the only FDA-approved accommodating crystal lens in 1981 and the only FDA-approved presbyopia correcting IOL. CrystaLens make the muscle of the eye responsible for focus, so it can work more effectively than traditional IOLS.
Few patients with Crystalens may have experienced eye problems, such as glare, halos and night vision. Some patient will need glasses or contact lenses following the eye surgery. Although every surgery has risks, cataract removal and crystalens implantation has a high success rate, and it help to decrease the potential need for corrective lenses. Now more than 100,000 patients have been implanted with crystalens worldwide.
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