Specialty Intraocular Lens (IOL) Options
In cataract surgery, the intraocular lens replaces the eye's natural lens.
Intraocular lenses come in a variety of materials and designs. However, there are four basic types of lenses available to replace the natural lens.
- Toric Monofocal
Dr. Robinson will suggest a particular type of lens and lens material best suited to the patient’s individual situation and lifestyle needs.
Dr. Robinson primarily recommends qualtiy (IOLs) provided by Alcon Laboratories, Bausch & Lomb, and Abbott Medical Optics. They ensure the advantage of proven technology and predictable outcomes. Consistent design, ease of implantation and demonstrated predictability all contribute to his confidence in their product lines. Dr. Robinson also uses many other lens brands from other companies and will recommend them to suit your individual visual needs. More general product and safety information is available online at ReclaimYourVision.com.
A fixed-focus or standard lens is intended to give clear vision in one area of vision distance.
There are three different areas of vision distance:
- Near Vision: (reading)
- Intermediate Vision: (computer)
- Distance Vision: (# ft to infinity)
The remaining areas of vision distance usually will require prescription lens eyeglasses for clear vision. Traditionally, the replacement lens used for cataract surgery was a standard monofocal IOL. A foldable monofocal lens called the AcrySof® IQ lens (IOL) is an extraordinary lens intended for patients following cataract surgery providing excellent visual performance.
Plain monofocal lenses only correct nearsightnedness and farsightedness and do not correct astigmatism. If the patient has moderate to high ammounts of astigmatism, Dr. Robinson may use Toric Monofocal lenses to correct the pre-existing astigmatism.
A multifocal specialty lens has several rings of different powers built into it. It has a central distance zone and four additional concentric zones or rings. The part of the lens (ring) you look through will determine if you see clearly at a far, near or intermediate distance. This specialty lens feature is called pseudoaccommodation. It can provide at least two and sometimes all three ranges of clear vision distance. Often this lens is used to treat myopia, hyperopia and presbyopia and may allow for less reliance on eyeglasses.
A foldable multifocal lens called the AcrySof® ReSTOR lens (IOL) is a breakthrough lens for cataract surgery that lets patients see from near to far, usually without eyeglasses. Innovative optical technologies called apodization, defraction and refraction make the lens uniquely effective, especially when placed in both eyes. Patients experience a full range of high quality vision without the need for reading glasses or bifocals. A similar technology has been used for years in microscopes and telescopes to improve image quality and has now been patented for use in intraocular lenses by Alcon.
Another type of multifocal lens Dr. Robinson uses is called the TECNIS® (IOL) lens by Abbott Medical Optics.
An accommodative lens is hinged to work in coordination with the eye muscles. The design allows the accommodative intraocular lens to move forward as the eye focuses on near objects, and move backward as it focuses on distant objects just as the natural eye. An example of an accommodative lens that Dr. Robinson also uses is called the Crystalens® by Bausch & Lomb.