Like the natural lens, it is a lens implant that uses the eye muscle to flex and accommodate in order to focus on objects in the environment at all distances. Crystalens dynamically adjusts to your visual needs. Few patients with Crystalens have experienced problems with glare, halos and night vision.
Crystalens focuses only one image to the back of the eye, unlike a multifocal lens that projects multiple images, requiring your brain to "adjust" to the differences. Crystalens accommodates like the natural lens. After implantation of Crystalens, most patients will see brighter and clearer across a wider range of distances like they did when they were younger. Crystalens addresses the limitations of standard monofocal IOLs and multifocal IOLs by providing the following advantages to patients:.
Is Crystalens Right For You? Crystalens The first and only FDA-approved accommodating intraocular lens The only FDA-approved intraocular lens that uses the natural focusing ability of the eye The only FDA-approved presbyopia correcting IOL for cataract patients that provides a single focal point throughout a continuous range of vision Few patients with Crystalens have experienced problems with glare, halos and night vision.
Learn more about the modernization effort. Hide glossary Glossary Study record managers: refer to the Data Element Definitions if submitting registration or results information. Search for terms. Save this study. Warning You have reached the maximum number of saved studies Listing a study does not mean it has been evaluated by the U.
Federal Government. Read our disclaimer for details. Last Update Posted : January 18, Study Description. Arms and Interventions. Outcome Measures. Eligibility Criteria. Talk to your doctor. Typically cataracts will develop in both eyes. If only one eye has a cataract, only one implant is necessary.
If both eyes have cataracts and the vision in one eye is worse, the surgeon will elect to implant that eye first. If both eyes are the same, the surgeon usually starts with the non-dominant eye. Your doctor will look at a number of factors in deciding which eye to implant first and when, if necessary, to implant the other eye.
Most surgeons prefer to wait two to three weeks between surgeries, but this may vary based on how well the first eye is healing and the visual outcome. You will arrive at the surgery center about an hour before the procedure. A number of topical drops will be placed in your eye and you may be administered medications to help you relax.
The eye drops anesthetize your eye and dilate your pupil. Once in the surgery suite, you will lie down on a comfortable bed, a microscope will be positioned over your eye, and you will be asked to look up into the light of the microscope. The actual surgery usually takes less than 15 or 20 minutes. The surgeon will stabilize your eye with a device to keep your eyelids open. You will feel no pain, only slight pressure on your eye.
All you have to do is relax and hold still. Once the surgery is complete, additional drops will be placed in your eye to prevent infection, decrease inflammation, and keep your pupil dilated.
A patch may be placed over your eye and someone will need to drive you home. Once at home, you should rest for the remainder of the day. You should avoid any strenuous activities. Your doctor will see you the day after surgery to remove the eye patch and examine your eye.
Do not rub your eye. The doctor will give you additional medications that you will need to put in your eye for the next week or two. These drugs help the eye heal, leaving no residual effects.
The contemporary treatment for cataracts is to remove the cataract or clouded lens and replace it with an implantable lens. Over 40 million procedures have been done in the last 25 years. But because it is surgery, it is not completely risk-free. Complications of cataract surgery range from minor, usually temporary side effects, to sight-threatening complications. Fortunately, significant sight-threatening complications are extremely rare, and include, but are not limited to, infection, hemorrhage, and retinal detachment.
These and other complications may occur as a result of the removal of a cataract, whether or not an intraocular lens is implanted, and may result in poor vision, total loss of vision, or loss of the eye. Dislocation of the lens and the need for additional surgery, such as lens removal and replacement, are also possible risks of the procedure. In addition, people with existing medical conditions such as diabetes, high blood pressure, chronic inflammatory conditions, and chronic infections are at a higher risk of developing complications.
Your doctor will perform a thorough examination and fully inform you of any increased risk of a complication. Your distance vision will usually be very good within a day or two after surgery. However, your middle and near vision may be somewhat blurred at first. You may need to wear reading glasses to help you read during this time.
It is important that you discontinue the use of the reading glasses at this time so that you strengthen the focusing muscle of your eyes. It may take several months for your eyes to reach their full focusing potential. The more you try to read without reading glasses, the quicker you will be able to read without them. You may notice a difference in your vision from one eye to the other after your eyes heal.
This is normal. If the difference in your vision is significant, your doctor may recommend additional corneal refractive surgery.
This is often done for the correction of astigmatism after implant surgery. Most people will be able to see clearly in the distance, have excellent middle vision, and will be able to read a newspaper without glasses, but some people may be more comfortable with additional correction for very near work such as needlepoint.
It is important to remember that implant surgery cannot resolve pre-existing visual conditions such as floaters, flashes, or visual field loss that are a result of conditions of the eye and not related to the lens.
Your doctor will thoroughly discuss the rejuvenation of your vision after surgery and will recommend a specific plan for optimizing your uncorrected vision for near and far. It is important to remember that while virtually everyone experiences much improved vision after cataract surgery, some people will have better uncorrected vision than others.
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