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Crystalens Accommodative Intraocular Lens

CrystalensThe Crystalens is an accommodating intraocular lens used in cataract surgery or as a lens alternative in presbyopic lens exchange. The lens is engineered with a hinge design to allow the optic, the part of the lens that you see through, to move back and forth as your focus on an image changes. The Crystalens®, once implanted, is designed to work in a similar fashion as the natural focusing system of the eye. Normally, the crystalline lens of the eye changes shape to allow for focus at different distances. After the age of 40, people will often start to experience difficulty reading as the eye’s natural lens starts to harden. Because, prior to this many people experience excellent vision, it can be confusing as to what is happening to their eyes. This difficulty focusing at near is known as loss of accommodation, or presbyopia (“old eye”). The crystalens, engineered with a hinge design, allows the optic of the lens to move back and forth as your focus on an image changes. This keeps the image in focus for a continuous range of distances including distance, intermediate, and near. The Crystalens IOL is the only lens implant approved by the FDA as an “accommodating” IOL.


FDA Crystalens Clinical Trial Information for patients implanted in both eyes:

  • 98.4% of patients implanted with the crystalens could pass a driver's test without glasses
  • 100% could see intermediate (24" to 30") without glasses, the distance for most of life's activities, including computer use.
  • Some patients did require glasses for some tasks after implantation of the crystalens. While the FDA study showed that over 95% of patients could read the newspaper and the phone book without glasses after surgery, it is sometimes necessary for patients implanted with the crystalens to require light reading glasses in order to read very fine print or to read for extended periods of time.

Refinements in lens implant technology have advanced significantly in recent years providing a variety of options to fine-tune the vision after surgery. However, it is important to remember that, while cataract surgery with customized intraocular lens implantation frequently results in a reduced dependency or even complete freedom from eye glasses, that it is never possible to guarantee complete freedom from glasses after surgery. In addition, there are other factors besides the implant that can determine the final vision after surgery, such as ageing of the retina, the shape of the cornea, or various other degenerative conditions of the eye.

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