There are many types of lens implants available. Once you have decided to proceed with cataract surgery, diagnostic testing is required to determine what type of lens implant is best suited for your needs. This depends on two factors: the health and the status of the optical visual system of your eye.
Dr. George Khouri will evaluate the health of your eye by looking for coexisting ocular medical conditions you may have which may limit you to one or more type (s) of lens implant (s) that you can select from.
Your optical visual system will then be evaluated for higher order aberrations. This is performed using wavefront aberrometry. The presence of corneal astigmatism will also be determined using corneal topography. Once the type of lens implant to be used for your procedure is determined, additional testing will be performed to determine the power and specifications of the lens implant. These measurements include optical biometry and A scan ultrasonography. Some or all of these diagnostic tests will be performed depending on the type of lens implant that you choose.
Lifestyle Lenses Compared to Other Lens Implants
Before the advent of advanced technology implants, called lifestyle lens implants, the traditional or monofocal lens implant was the only option for patients. This corrects your vision for distance if you have no astigmatism. However, it does not correct your vision simultaneously for distance and near as Accommodative Lens Implants or Multifocal Lens Implants would. Therefore, you would be dependent on glasses after surgery for distance and/or near. In case you choose to have a traditional monofocal lens implant, Dr Khouri recommends a High Definition Vision Package to help improve your distance vision by giving you a crisper image on the retina. There is a small fee for each eye for the additional testing and surgical planning required as this is not covered by any insurance. Since traditional or monofocal lens implants correct vision for only one focal point, near or distance, monovison is an option to correct distance vision in one eye and near vision in the other for some patients who are candidates. This has been around for several decades. However, there is some compromise in the quality of your vision since the eye that sees well for distance will be blurred up close and vice versa. Your depth perception is usually somewhat affected as well. Both eyes are still working together but one eye sees more clearly at a certain distance than the other.
Around the beginning of the 21st century, Toric Lens Implants to correct astigmatism and Accommodative Lens Implants or Multifocal Lens Implants to correct presbyopia became available.