Patients who have astigmatism can consider a Toric implant at the time of their cataract surgery A toric intra-ocular lens or IOL, is a lens that can correct nearsightedness or farsightedness, and astigmatism. The lens has a specific power along a meridian that can be positioned in the eye to correct a patient’s astigmatism. Placement of a Toric IOL will offer clearer optical images after surgery, and improve uncorrected vision. There are certain criteria for placement of a toric IOL, and the staff at Manchester Ophthalmology will gladly review these criteria with you.
Cataract surgery now offers the benefits of improved near, intermediate and distance vision thanks to multi-focal lenses.
If your doctor has informed you that you are a candidate for cataract surgery, you may want to consider enhancing your procedure by selecting multi-focal lenses. Unlike standard lenses, multi-focal lens design uses technology to provide patients with near, intermediate, and distance vision. Presbyopia is a condition that usually starts to affect people in their early to mid-forties when they can no longer see well up close. As a result, presbyopic patients have difficulty with activities such as reading, sewing, and using the computer. In the FDA clinical studies, the majority of patients who received the types of multi-focal lenses (see multi-focal section) available at Manchester Ophthalmology reported that they no longer needed glasses for any activities. Many patients note that, after receiving these lenses, reading without glasses is as easy as it was before their forties. Even when patients opt to follow up with a pair of glasses, many find that wearing these glasses is not essential for the majority of their daily functions.
Medicare and most insurance companies cover the cost for cataract surgery using the standard intraocular lens. If you choose to proceed with a multi-focal lens, Medicare will still provide up to its allowed payment for the standard procedure and operating room time. Medicare, and supplementary insurance plans, will not cover the cost of upgrading your lens or additional testing and evaluation.
Refractive Surgery or Clear Lens Exchange for Candidates without Cataracts
Patients without cataracts may also choose a multi-focal lens to correct for far sightedness, near sightedness, and presbyopia to give them a quality range of vision like they had when they were younger. Presbyopia is a condition that usually starts to affect people in their early to mid forties when they can no longer see well up close. As a result, presbyopic patients have difficulty with activities such as reading, sewing, and using the computer. A procedure called a clear lensectomy, which is similar to cataract surgery, is performed to remove the natural lens and replace it with the multi-focal lens. Refractive surgeries are elective procedures and therefore the patient is responsible for all costs.
While mulitfocal lenses are designed with the goal of providing independence from glasses and contacts for most activities, they do not guarantee that you will be completely free from needing some correction for certain tasks. Additional refractive adjustments, such as LASIK, may be needed to correct patients to their desired distance results.
ReSTOR Multifocal Implant
Until recently, life without reading glasses or bifocals was not an option for most cataract patients.
With cataract surgery, patients now have a choice to implant the AcrySof® ReSTOR® lens. The ReSTOR lens is a unique technological innovation that can provide you with quality vision throughout the entire visual spectrum – near through distance – with increased independence from reading glasses or bifocals!
How does the AcrySof® ReSTOR® IOL work?
As we perform daily activities such as reading, watching television or working at the computer, our eyes are constantly focusing on objects at varying distances – up close, far away and everything in-between. The ability to quickly change focus throughout this range of vision is called accommodation.
Accommodation: The ability of the eye’s lens to change shape to focus on objects at various distances.
This ability diminishes as we grow older, causing us to become dependent on bifocals or reading glasses. However, the AcrySof® ReSTOR® IOL was designed to provide quality near and distance vision by combining the strengths of apodized defractive and refractive technologies. 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.
Apodization is the gradual tapering of the diffractive steps from the center to the outside edge of a lens to create a smooth transition of light between the distance and near focal points. Diffraction involves the bending or spreading of light to multiple focal points as it passes through the lens. On the AcrySof® ReSTOR® IOL, the center of the lens surface consists of an apodized diffractive optic. This means that the series of tiny steps in that center area work together to focus light for near
Near vision: Refers to focal points that are typically 16 inches or closer to your eyes. This is also known as “reading vision.” Items that typically fall within the near range of vision are books, newspapers, and medicine bottles.
Refraction: Redirection of light rays as they pass through the lens.
The refractive portion of the AcrySof® ReSTOR® IOL bends light as it passes through the lens to a focal point on the retina. This outer ring of the AcrySof® ReSTOR® IOL surrounds the apodized diffractive region and is dedicated to focusing light for distance vision.
The ReSTOR lens is a novel technology allowing for crisp distance and near vision. Studies report that 80% of people who have this lens implanted are free of all spectacle dependence. RsSTOR provides excellent reading vision, but it is often at a distance of 12- 14 inches. Of the 20% of patients who required glasses post ReSTOR, most were for intermediate distance, like working on the computer. ReSTOR is an exciting technology for those who wish to reduce their spectacle dependence. We have an extensive experience with implanting the ReSTOR lens, and would be glad to speak to you further. For information please call (860) 649-5177.
What is the crystalens® accommodative IOL?
This procedure is commonly referred to as presbyopia-correcting IOL surgery. The crystalens® accommodating intraocular lens is an intraocular lens used after cataract surgery or as a lens alternative in presbyopic lens exchange.
The concept of the lens was engineered with a hinge design to allow the optic, or part of the lens that you see through, to move back and forth as your focus on an image changes. The crystalens® accommodative intraocular lens is permanently implanted with a surgical process and functions in a similar fashion as the natural eye. Once the surgery has been completed your eyes can focus on far or near objects in a comfortable way with no discomfort. If you are experiencing presbyopia or cataracts please feel free to consult us about the possibility of utilizing the new crystalens® accommodative intraocular lens.
The only accommodative intraocular lens for correction of presbyopia. If you have worn bifocals this lens might be a viable vision correction option. Please consult directly with our doctors to determine your candidacy.
How does the crystalens® IOL work?
After the age of 40 people will often start to experience difficulty reading as the eye’s natural lens starts to harden. Prior to this many people often experience excellent vision and are typically confused as to what is happening with their eyes. Because their vision may have been perfect they have never consulted an ophthalmologist as to what is naturally occurring. This inability to see at close distances or difficulty for the muscles in the eye to auto-focus can be very discouraging. This is known as loss of accommodation, or presbyopia. The crystalens® was engineered with a hinge design to allow the optic, or part of the lens that you see through, to move back and forth as your focus on an image changes.
FDA Clinical Trial Information
- 98.4% of patients implanted with crystalens® 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®
- Significantly more patients implanted with a crystalens® (88.4%) could see better at all distances then patients implanted with a standard IOL (35.9%)
Can my vision be corrected to 20/20, for both reading & distance?
The crystalens® has been designed to focus your eyes at all distances after cataract surgery. While virtually everyone will experience a significant improvement in their uncorrected vision after surgery, some people will not see 20/20 at all distances.
It is interesting to note that many people who have not had surgery are not able to see 20/20 at both near and far even with glasses or contact lenses. This is due to a variety of ocular and physiological problems as well as lifestyle preferences, yet most of these people function quite normally although their vision is reduced.
The two-year clinical trial that supported the FDA approval of the crystalens® indicated that 92% of the people enrolled in the study (implanted bilaterally) could see 20/25 or better at distance, 96% could see 20/20 at arm’s length and 73% could see 20/25 at near without glasses or contact lenses. What is more exciting is that 98% of these people could pass their drivers test, 100% could see their computer and dashboard, read the prices in the supermarket or put on their makeup, and 98% could read the telephone book or newspaper, all without glasses or contact lenses.
It is important to keep in mind that visual acuity is subjective and depends upon each individual’s own ocular and physiological conditions as well as lifestyle preferences. Some patients implanted with the crystalens® still require glasses for certain activities. (Courtesy of www.crystalens.com)
What makes the crystalens® different from other intraocular lenses?
The crystalens® has the unique ability to focus on objects at varying distances using the eye’s natural focusing system. This means that the crystalens® can provide a continuous range of vision, without corrective lenses, 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. It was shown in the two-year clinical trial that supported the FDA approval of the crystalens® that significantly more patients implanted with a crystalens (88%) could see better at all distances than patients implanted with a standard lens (36%).
If you are seeking crystalens® surgery in Connecticut, contact Dr. Petashnick! Our doctors and staff are standing by to answer any questions about this revolutionary lens technology. Please feel free to contact us directly at 1.860.649.5177. Manchester Opthalmology is dedicated to excellence in Connecticut eye care. Call us today!