FDA Approves Crystalens HD (TM) 4th Generation Accommodating
Lens Implant-Jume 2008
Bausch & Lomb received approval from the Food and Drug Administration (FDA) to market the Crystalens HD™ in the United States. Crystalens accommodating intraocular lens (IOL) was first approved by the FDA in November 2003. The Crystalens HD is the fourth generation of the only FDA approved accommodating lens.The surface of the Crystalens HD (TM) has been shaped to enhance the depth of focus with a proprietary optical modification. The enhanced optic provides an increased depth of focus which is designed to improve near vision without compromising intermediate or distance vision. The HD lens does this without inducing increased undesirable dysphotopsia or night vision symptoms.
Aspheric Lens Implants & Contrast Sensitivity
Journal of Cataract & Refractive Surgery: August 2007
A Canadian researcher reported that by carefully measuring and targeting the amount of spherical aberration to be corrected through an Aspheric Intraocular Lens Implants after cataract surgery, it is possible to improve the overall contrast sensitivity achieved. Contrast sensitivity improvements are generally regarded as a way to improve vision in dim illumination and poor lighting conditions such as for night driving.
Delaying Cataract Surgery
Canadian Medical Association Journal: April 2007-People who undergo cataract surgery within six weeks of booking their procedure have better visual outcomes, as well as increased quality of life and fewer adverse events such as falling, says research reported in the April 24 issue of the Canadian Medical Association Journal. People who waited six months or longer for their cataract surgery experienced more adverse events.
Cholesterol Drugs Decrease Risk of Cataracts and Macular Degeneration
American Journal of Ophthalmology: April 2007-The class of cholesterol lowering medications called “statins” have been found to reduce risks of developing both cataracts and advanced age-related macular degeneration. Researchers found that statins slowed the development of cataracts by 50%.
ReSTOR® Aspheric Lens Implant FDA Approved: February 2007
The U.S. Food and Drug Administration recently approved a new aspheric version of Alcon's AcrySof ReSTOR® Intraocular Lens (IOL) for cataract surgery. The lens, known as the AcrySof ReSTOR® apodized diffractive aspheric IOL, addresses presbyopia by providing different zones enabling vision correction at near to far distances. An Alcon Laboratories statement says the newly approved aspheric optics design is the only one currently available in the U.S. in a presbyopia correcting lens implant.
Researchers previously have produced evidence that aspheric lenses, which are somewhat flattened at the periphery, may help offset aberrations in the eye that can cause vision problems such as reduced night vision and contrast sensitivity.
Medicare Allows Astigmatism Correcting Lens Implants for Cataract Surgery
Centers for Medicare and Medicaid Services: February 2007 Medicare recipients are now able to choose an astigmatism-correcting Intraocular Lens for cataract surgery. While the ruling allows Medicare coverage for basic cataract surgery, patients must pay out-of-pocket for any extra features such as for astigmatism correction. In the past, astigmatism-correcting lens implants were not covered at all.
Common Prostate Drug Can Cause Problems With Cataract Surgery
American Academy of Ophthalmology: August 2006 – A number of medical associations including the American Academy of Ophthalmology, the American Society of Cataract & Refractive and the American Urological Association have warned patients that the common prostrate drug, Flomax, and similar medications known as alpha-blockers may cause problems during cataract surgery. If you are taking Flomax and plan on having cataract surgery it is important that you alert your cataract surgeon before you have your surgery.
Flomax, commonly used to treat an enlarged prostate, and other alpha-blockers such as Hytrin, Cardura and Uroxatral can cause abnormal movement of muscles controlling the opening and closing of the iris and thus can interfere with pupil dilation, creating a condition known as intraoperative floppy iris syndrome. Your cataract surgeon will take extra precautions including additional eye drops if you are taking these medications in order to prevent unexpected complications during cataract surgery.
Asthma Drugs May Be Linked to Cataracts
European Respiratory Journal: July 2006 -Researchers at McGill University Health Centre found that people older than 65 using daily doses of inhaled corticosteroids to reduce risk of attacks of asthma or chronic obstructive pulmonary disease (COPD) increase their risk of developing cataracts by 24%. For that reason older people with asthma who use cortisone-based medications in their inhalers might consider asking their physicians about reducing dosages to avoid cataracts or their progression.
"New Technology" Designation Awarded to Tecnis Intraocular Lens
Centers for Medicare and Medicaid Services: March 2006 -The Centers for Medicare and Medicaid Services (CMS) announced that the "new technology" designation for the Tecnis Intraocular Lens, used to replace the eye's natural lens during cataract surgery, was effective in late February 2006. Because the lens incorporates an aspheric design, it corrections higher order aberrations and thus is helpful in increasing glare under certain lighting conditions by enhancing contrast especially at night and low light conditions.
Fruits and Vegetables May Protect Against Cataracts
American Journal of Clinical Nutrition: July 2005 - Researcher William Christen of Harvard Medical School and Brigham and Women's Hospital investigated the effects of dietary intake of fruits and vegetables on the occurrence of cataracts. When the study began, none of the patients had cataracts. By the end of the study, those who had eaten the most fruit and vegetables were 10% to 15% less likely to have cataracts than the other patients.
Medicare Allows Presbyopia Correcting Lens Implants for Cataract Surgery
Centers for Medicare and Medicaid Services: May 2005 -The Centers for Medicare and Medicaid Services (CMS) have ruled that Medicare beneficiaries may choose Intraocular Lenses (IOLs) that correct presbyopia for an additional fee as part of their Medicare-covered cataract surgery. These newer IOLs correct vision at more than one distance and offer the possibility of little or no dependency on reading glasses. Before the ruling, Medicare patients were limited to receiving the traditional monofocal distance-vision IOLs that don't correct near vision.
ReZoom Multifocal Lens Implant FDA Approved: April 2005
The ReZoom Multifocal Intraocular Lens is designed to distribute light over five optical zones to provide distance, intermediate, and near vision for cataract patients. The idea is to reduce the need for spectacles, including reading glasses, after cataract surgery.
AcrySof ReSTOR® Lens Implant FDA: March 2005
The AcrySof Lens Implant, a type of artificial lens or intraocular lens implant that can restore vision at near, intermediate, and distance ranges following cataract surgery received U.S. Food and Drug Administration approval. The clinical studies supporting the approval showed that 80 percent of patients who received the AcrySof ReSTOR® lens did not use glasses for any activities after cataract surgery. The AcrySof ReSTOR® lens provides different ranges of vision based on a lens configuration that enables specific distribution of light in response to how wide or small the eye's pupil might be. Most current intraocular lenses used for cataract surgery are able to restore vision only in limited distance ranges, which means patients often must use eyeglasses or other corrective lenses following surgery.