The Eyeonics Crystalens Lens Implant
The Eyeonics Crystalens is the first "accommodating" lens implant to be approved by the FDA, uniquely designed with hinges on two sides, held in place and moved by the tiny ciliary muscles inside the eye to enhance focusing ability.
The Crystalens has advanced focusing capability that best corrects vision for distance and intermediate, while objects at near distances may still be somewhat out of focus. Some patients may need reading glasses for small print.
The Crystalens lens implant is:
- The first and only FDA approved accommodating intraocular lens prescribed for Presbyopia
- The only lens implant that utilizes the natural accommodating ability of the eye
- The first lens implant to provide a single focal-point throughout a wider range of vision
The accommodative abilities of the Crystalens result from the focusing muscle in the eye, called the ciliary muscles. These muscles change the position and thus the focus of the Crystalens, allowing the eye to automatically provide a wider range of vision.
Presbyopia — the inability to accommodate
Presbyopia describes the condition where the eye exhibits a progressively diminished ability to focus on near objects with age. Most people's vision remains stable until their late 40's when, at that time, the eye's natural internal (crystalline) lens begins to gradually enlarge and harden. It then becomes difficult for the eye to adjust your lens to focus at varying distances. This is known as "loss of accommodation", or "Presbyopia” and its earliest symptom is difficulty seeing things close-up without reading glasses. Generally, reading glasses, bifocals, or trifocals are the standard solution to Presbyopia. However, the Crystalens lens implant is now an option in cataract surgery to replace the natural lens when it has lost its ability to accommodate. For most people the Crystalens greatly reduces their dependency on glasses.
What makes the Crystalens unique?
In conventional cataract surgery, the surgeon removes the hardened, cloudy natural lens and implants a single-focus artificial lens, called an "intraocular lens implant" or "IOL". This lens allows the patient to see well only at one fixed distance, usually far distance. For close and intermediate vision, patients would require the use of glasses.
The Crystalens offers the potential to restore much of your eye's natural focusing ability by incorporating a design corresponding to the way the natural lens flexes and focuses. The Crystalens has hinges on both sides so it can be moved by the tiny ciliary muscles inside your eye, allowing you to focus more naturally at a greater range of distances than with traditional lens implants.