Cataract Lens & Lens Implants
Intraocular Lens Implants (IOLs) – Cataract Surgery.
Dr. Tinoosh specializes in refractive custom cataract surgery. We try to minimize the refractive error (prescription) as much as possible during cataract surgery, in order to lessen our patients’ dependency on glasses post-operatively. Besides Dr. Tinoosh’s surgical skills, this also requires attention to details during the pre-operative assessment and choice of intraocular lenses. Intraocular lenses are measured using laser interferometry with the Carl Zeiss IOL master. In dense cataracts, immersion A-Scan ultrasonography is also used to confirm the intraocular lens implant measurements. There are many types of IOL’s (Intraocular Lenses) on the market and new ones are being developed every day, including lenses to correct for astigmatism, block UV light and a range of other specific characteristics. Very few insurance carriers cover specialty lenses. Each of these lenses requires specific training and certification for implantation.
There are different types of IOL’s, Monofocal and Multifocal:
Monofocal: This is the traditional IOL, approved by the FDA in 1981. It is a single focus lens that allows for vision at a set distance – near, intermediate or far. Corrective lenses may be needed after cataract surgery with this IOL to compensate for your particular visual needs. When cataracts are present in both eyes, patients may elect to have both eyes implanted with IOL’s that correct for distance. This provides good distance vision, but patients will require reading glasses for up close functions. Patients may elect to have one eye implanted with a near lens and the other with a far lens, a technique called Monovision, which many contact lens wearers are already familiar with. Dr. Tinoosh uses the most advanced monofocal intraocular lenses available, and the wavefront optimized lenses whenever it is possible. These intraocular lenses have the best potential for visual quality and for better night vision.
- Toric Monofocal
- Multifocal or Accommodating
These are the newer IOL’s that allow for greater range of vision and decreased dependency on glasses or contacts. The best part of these accommodating lenses is that they correct for Presbyopia (hardening of the eye’s natural lens as we age). These lenses work in different ways. Depending on your visual needs and characteristics, Dr. Tinoosh will make sure you understand the options and help you make the most informed decision possible. It is important to understand that although these lenses give more ranges of vision, the visual outcome cannot be compared to the natural lens of a perfectly seeing eye at a young age where the eye has perfect ranges of vision. Patients may be spectacle free for most of the time, however, they may still need glasses for some hard visual tasks like night driving or reading, especially in dim illumination or reading very fine print. Here is a very general overview of some of the lenses Dr. Tinoosh prefers.
An Apodized Diffractive lens with multiple zones, which responds to the way light is focused in the eye at various distances – the center is optimized for near vision, with a gradual tapering to the outer edge of the lens that is optimized for distance. The ReSTOR lens provides excellent far away and close-up vision. It provides reasonable intermediate vision (computer distance). It functions almost like glasses with bifocals. AcrySof ReSTOR was approved by the FDA in 2005. Dr. Tinoosh uses the latest generation, the ReSTOR aspheric IOL. This is a wavefront optimized intraocular lens that improves on the previous generation. The ReSTOR IQ currently comes in 2 versions, for maximum optimization of near vision.
TECNIS® multifocal Lens
The advanced TECNIS® Multifocal is an implantable lens that significantly improves vision after cataract surgery and corrects presbyopia. Designed to help you regain younger vision and be free of glasses, the TECNIS® Multifocal Lens can provide you with high-quality vision at all distances and in all lighting conditions—even in dim light. If you enjoy activities such as reading, boating, quilting, playing golf, sightseeing, or surfing the Internet, the TECNIS® Multifocal Lens allows you to lead an active lifestyle. (Only with the TECNIS® Multifocal IOL: • High-quality vision even in low-light environments, such as reading a menu in a dim restaurant or driving at night. • Excellent vision for all distances—near, far, and everything in between. • Nearly 9 out of 10 patients never have to wear glasses.)
Crystalens is a revolutionary new breakthrough in vision enhancement. It is the first intraocular lens (IOL) replacement for cataracts that focuses like the eye’s natural lens, allowing for continuous vision up close, far away and all distances in between.
By using the eye’s muscle to move the lens backwards and forwards naturally in response to the brain’s desire to see at different distances. Crystalens enables the eye to focus continuously and seamlessly through a range of distances, including near, far and everything in between. Patients experience the same vision they had when they were younger, for most without the inconvenience of corrective lenses. The Crystalens is ideally suited for men and women aged 50 to 64 years of age with cataracts who want to not only restore clarity in their vision, but restore their near, intermediate, and distance vision.