A cataract is a slow, progressive clouding of the eye's natural lens. It interferes with light passing through the eye to the retina.
Cataracts are caused by a change in the proteins of the eye, which causes clouding or discoloration of the lens. Over time cataracts typically result in blurred or fuzzy vision and sensitivity to light.
Using the most up to date methods and instrumentation, cataract surgery is typically performed using a small incision, phaecoemulsification technique. This means that the cataract surgery is accomplished using the smallest possible incision, and removal of the lens material is accomplished using an ultrasonic needle. There is a common misconception that cataract surgery is done using a laser. This is not the case, and has never been the case. The use of laser energy produces too much heat to be adapted for this purpose, and would cause irreversible damage to the delicate tissues inside the eye.
Intraocular lens come in a variety of materials and designs. Your surgeon generally chooses a lens made of a material that is best suited to your individual situation. All intraocular lenses used in our practice are coated with UV filters. Some lenses are yellow in color. These lenses are theoretically better at blocking the light rays in the blue spectrum which are thought to be related to the development of macular degeneration in some patients. Some intraocular lenses are designed to be multifocal in certain lighting circumstances, which may enable patients to see both at distance and near without the aid of spectacles. This effect has been shown in all patients in whom the lens has been implanted, and it is once again important for patients to realize that while cataract surgery with intraocular lens implantation frequently results in a reduced dependency on eye glasses it is never guaranteed to eliminate this need totally.
FDA Clinical Trials Show 80% of Patients Are Spectacle FREE after surgery with a Restor™Lens
Following proper dilation of the pupil and preparation of the surgical area using betadine or other cleansers, a topical anesthetic is administered to the surface of the eye. An incision of 2.5 to 3 millimeters in length is then created at the junction of the cornea (the clear domed structure on the front of the eye) and the sclera (the white part of the eye).
Another dose of anesthetic is then administered inside the eye through this incision. The front part of the lens envelope, know as the lens capsule, is carefully opened so that the lens material can be removed. This is accomplished using a needle-like ultrasonic device, which pulverizes the hardened and yellowed lens proteins. The pulverized material is simultaneously vacuumed from the eye.
Once all of the cataract material has been removed, and assuming that the lens capsule which was opened at the beginning of the surgery remains strong enough to support the lens implant, a folded intraocular lensspecifically chosen by the surgeon to suit your individual needs is then inserted through the original incision and maneuvered into the lens capsule and then centered. The lens will remain inside your eye in this location without moving. Intraocular lenses cannot be felt or sensed in any way by the patient.
In most cases, once the lens is centered within the lens capsule, the instruments are removed, and the surgery is therefore complete. Under most normal circumstances stitches(or sutures) are not required to keep the incision sealed. Should the incision require a suture to be placed for proper sealing, this suture is generally removed within the first week following surgery.
Recovery from surgery is generally very quick, with most patients achieving noticeablybetter vision within the first 24 hours of the procedure. Patients are generally asked touse two different eye medications, administered as drops several times daily for the first few weeks after surgery. It is important that during the first 7 post-operative days patients refrain from strenuous activity such as lifting weights for exercise or lifting other heavy objects. Patients should also refrain from eye rubbing during the first few weeks following surgery.
If glasses are required following surgery to achieve the best possible vision either for close up work such as reading, or for distance purposes, these will be prescribed three to four weeks after surgery when full recovery is expected. If both eyes are scheduled to have surgery within a few weeks of each other, then glasses, if needed, will be prescribed following full recovery of the second eye.
The AcrySof ReSTOR lens is a foldable IOL that represents breakthrough technology because of its unique, patented optic design, which allows patients to experience the highest level of freedom from glasses ever achieved in IOL clinical trials.
The AcrySof ReSTOR IOL uses a combination of three complementary technologies: apodization, diffraction and refraction, to allow patients to experience a full range of high-quality vision without the need for reading glasses or bifocals. This range of vision without glasses is achieved through the optical properties of the IOL.
The benefit for patients is a high level of spectacle freedom. Alcon has patented the application of apodization technology to an IOL, making the AcrySof ReSTOR lens the first and only apodized diffractive IOL.
During U.S. clinical trials, the results with ReSTOR were remarkable:
We provide the technology that makes freedom from all glasses possible when Lasik does not apply.
The ReSTOR lens, a multifocal implant with so-called apodized diffractive lens, the CrystaLens, an accommodative implant, and the ReZoom lens which is another multifocal lens do much to free people of the need for glasses not only for long vision but also for reading and intermediate vision.The Verisyse lens implant and the Visian ICL implant both are designed to bring excellent distance vision for people who do not have cataracts and whose eyes are too nearsighted to be adequately helped with LASIK.