Eyeonics CRYSTALENS Lens Implants:
Harvard Eye Associates — 30 Years
of Lens Implant Experience!
What makes the CrystaLens unique?
In conventional lens implant surgery, which has been the standard treatment for cataracts for many years, the surgeon implants a fixed focus plastic or silicone artificial lens. This lens allows the patient to see well only at distance. For reading vision, patients would require a pair of glasses.
Unlike other intraocular lenses (IOLs), the CrystaLens
has the unique ability to focus on objects at varying
distances using the eye's natural muscle. This means
that the CrystaLens can provide sharper vision, without
corrective lenses, potentially throughout a full range
of vision from near to far and everything in between.
Standard (single vision) lens implants do not have
the ability to provide a full range of vision.
Most people who have single vision lens implants MUST wear
glasses for middle and near vision. Similarly,
most people over the age of 45 who have LASIK have a single
range of vision, unless they have one eye treated
for distance and one eye corrected for near vision. This
type of treatment, sometimes called "monovision"
has its own set of limitations and may not be the answer
for everyone.
However, the Crystalens is able to restore your eye's natural
focusing ability by using a design that corresponds
to the way the natural lens flexes and focuses.
Comparison of Fixed Focus and Crystalens Characteristics:
| SINGLE-FOCUS LENS
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CRYSTALENS
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• Fixed focal point
• Corrects only distance vision
• Does not move in eye
• Glasses required |
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• Moving focal point - "accommodates"
• Full range of distance, intermediate, and near vision
• Uses eye's natural focusing mechanism
• Use of glasses is greatly minimized |
The Crystalens is implanted in a similar manner to other intraocular
lenses. It can be implanted after the removal
of the eye's natural lens using the same technique
as modern cataract surgery. This means your surgery can performed on an outpatient
patient basis and that you can resume your normal work
and recreational activities within a couple of days.
The Crystalens is a new technology that is designed to mimic the
eye's natural ability to focus on distant, middle and near objects.
Used in conjunction with standard cataract extraction methods, the
Crystalens can potentially restore a full range of functional vision,
from distance to reading vision without total dependence on glasses
or contact lenses.
The Crystalens Clinical
Trials:
The Crystalens is intended and FDA Approved for the
visual correction, secondary to the removal of a cataract,
in adult patients with and without presbyopia.
- 98.4% of patients implanted with the Crystalens
accommodating lens in both eyes 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
- 98.4% could see well enough to read the newspaper
and the phone book without glasses
- Some patients did require glasses for some
tasks after implantation of the Crystalens
accommodating lens
- Significantly more patients implanted with
a Crystalens (88.4%) could see better at all
distances
without glasses
than patients implanted with a standard
IOL (35.9%)
How It Works, next page —>
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