 |
|
Cataract surgery does not appear associated with worsening of age-related macular degeneration
November 10, 2009Age-related macular degeneration does not appear to progress at a higher rate among individuals who have had surgery to treat cataract, contrary to previous reports that treating one cause of vision loss worsens the other, according to a report in the November issue of Archives of Ophthalmology, one of the JAMA/Archives journals.
Cataract is the leading cause of blindness worldwide and age-related macular degeneration (AMD) is the leading cause of blindness among Americans age 65 and older, according to background information in the article. Surgery is the most effective and common vision-restoring treatment for cataract. "Because both conditions are strongly age-related, many individuals with cataract also have AMD," the authors write. "There has been a long-standing controversy among clinicians as to whether cataract surgery is contraindicated in eyes with non-neovascular AMD. A major concern has been whether cataract surgery increases the risk of progression to neovascular AMD [an advanced form of the disease involving formation of new blood vessels] in eyes at risk of progression such as those with intermediate AMD."
Li Ming Dong, Ph.D., of Stony Brook University School of Medicine, N.Y., and colleagues studied eyes of 108 individuals with non-neovascular AMD who underwent preoperative assessments for cataract surgery between 2000 and 2002. Photographs of the retina were taken and fluorescein angiography, which uses a special dye to investigate blood vessels in the eye, was performed. A total of 86 evaluated eyes had non-neovascular AMD before surgery, and 71 had follow-up assessments between one week and one year after surgery.
Neovascular AMD was observed in nine (12.7 percent) of these 71 eyes at one or more follow-up assessments. Five eyes displayed signs of neovascular AMD at the one-week follow-up point; the size and location of the lesions identified indicated that they may have been present before surgery but not visible due to the opaque lens caused by cataract. When these eyes and one eye that did not have one-week follow-up photographs available were excluded, the progression rate between one week and one year decreased to three of 65 eyes (4.6 percent). The rate of progression to neovascular AMD was similar among participants' other, cataract-free eyes over the same time period (one eye, or 3 percent).
"Our findings suggest that previous reports of the association or progression of non-neovascular AMD to advanced AMD after cataract surgery could be biased with the absence of immediate pre-operative and postoperative fluorescein angiography to rule out pre-existing neovascular AMD or geographic atrophy," the authors write. "Subtle signs of neovascular AMD or geographic atrophy, even on an angiogram, may be obscured by lens opacity just prior to cataract surgery. In such cases, the neovascular disease or the geographic atrophy may contribute to the individual's vision loss, and this may erroneously be ascribed to the cataract and contribute to a decision to proceed with cataract surgery."
"Our findings do not support the hypothesis that cataract surgery accelerates the progression of AMD," they conclude.
JAMA and Archives Journals
Neovascular AMD was observed in nine (12.7 percent) of these 71 eyes at one or more follow-up assessments. Five eyes displayed signs of neovascular AMD at the one-week follow-up point; the size and location of the lesions identified indicated that they may have been present before surgery but not visible due to the opaque lens caused by cataract. When these eyes and one eye that did not have one-week follow-up photographs available were excluded, the progression rate between one week and one year decreased to three of 65 eyes (4.6 percent). The rate of progression to neovascular AMD was similar among participants' other, cataract-free eyes over the same time period (one eye, or 3 percent).
"Our findings suggest that previous reports of the association or progression of non-neovascular AMD to advanced AMD after cataract surgery could be biased with the absence of immediate pre-operative and postoperative fluorescein angiography to rule out pre-existing neovascular AMD or geographic atrophy," the authors write. "Subtle signs of neovascular AMD or geographic atrophy, even on an angiogram, may be obscured by lens opacity just prior to cataract surgery. In such cases, the neovascular disease or the geographic atrophy may contribute to the individual's vision loss, and this may erroneously be ascribed to the cataract and contribute to a decision to proceed with cataract surgery."
"Our findings do not support the hypothesis that cataract surgery accelerates the progression of AMD," they conclude.
JAMA and Archives Journals
Cataract Surgery Current Events and Cataract Surgery News RSSCataract surgery helps AMD patients; steroid improves DME; online eye health forum
This month's Ophthalmology, the journal of the American Academy of Ophthalmology (Academy) reports on a national study that finds cataract surgery is likely to benefit patients with age-related macular degeneration (AMD) at all stages of the disease, on a clinical trial showing that the steroid triamcinolone may be effective in advanced diabetic macular edema (DME) patients when standard treatment fails, and on the public's use of two Academy-sponsored online eye health forums.
Drug for urination difficulties linked with complications after cataract surgery
Use of the medication tamsulosin to treat male urination difficulties within two weeks of cataract surgery is associated with an increased risk of serious postoperative ophthalmic adverse events such as retinal detachment or lost lens.
Corneal transplant technique shows promise in children
For infants and children with blinding diseases of the cornea, a sophisticated new corneal transplantation technique offers the hope of improving vision while overcoming the technical difficulty and low success rate of traditional penetrating keratoplasty (PK) in children, according to reports in the current issue of the Journal of AAPOS (American Association for Pediatric Ophthalmology and Strabismus).
Self-moisturizing contact lenses, naturally
Even contact lenses are joining the trend to go green.
Physics provides new insights on cataract formation
Using the tools and techniques of soft condensed matter physics, a research team in Switzerland has demonstrated that a finely tuned balance of attractions between proteins keeps the lens of the eye transparent, and that even a small change in this balance can cause proteins to aggregate and de-mix.
Eye diseases gave great painters different vision of their work, Stanford ophthalmologist says
Michael Marmor, MD, wanted to know what it was like to see through the eyes of an artist. Literally.
Cataract scheme 'expensive over-reaction' say doctors
The independent sector treatment centre (ISTC) scheme for NHS cataract services was an expensive over-reaction to the need to increase rates of cataract surgery, say senior doctors in this week's BMJ.
Artificial cornea offers better results for infants, some blind patients
Infants and adults who are blind due to a cloudy or damaged cornea are seeing some remarkable results thanks to a new version of an artificial implant that takes the place of the cornea, the clear covering of the eye that serves as our window on the world.
New wireless networking system brings eye care to thousands in India
Thousands of residents of rural villages in India are receiving quality eye care thanks to a collaborative effort between an Indian hospital network and the researchers at the University of California, Berkeley, and at Intel Corporation who have developed a new technology for low-cost rural connectivity.
Informed Consent Does Not Seem to Influence Decision-Making Process For Cataract Surgery
Informing patients of the risks of cataract surgery as part of the informed consent procedure one day before surgery does not seem to influence patients' decisions to have the procedure, according to an article in the January issue of The Archives of Ophthalmology, one of the JAMA/Archives journals. Cataract surgery is the most frequently performed eye surgery and is the cause for one third of all lawsuits against ophthalmologists, according to the article. Cataracts occur when the lens of the eye becomes cloudy and opaque, which can compromise vision. During cataract surgery, the clouded lens is removed, and an artificial lens is placed. Informed consent is a process by which the patient is
More Cataract Surgery Current Events and Cataract Surgery News Articles
 |
Cataract Surgery: Expert Consult - Online, Print and DVD by Roger F. Steinert MD (Author) Extensively revised, this state-of-the-art 3rd edition of Cataract Surgery offers new perspectives and cutting-edge coverage of the rapidly evolving field of cataract surgery. Roger F. Steinert, MD, along with a who's who of top international experts, delivers comprehensive clinical coverage of the latest surgical techniques, principles, and pearls, as well as expert advice on preoperative assessment and how to avoid and manage complications. Detailed discussions on today's hot topics such as aspheric and presbyopia IOL, phacoemulsification, and more, keep you at the forefront of this burgeoning field. And, more than 1050 illustrations and a DVD containing videos of cataract procedures give you step-by-step visual guidance. Plus, with Expert Consult functionality, you'll have easy access... |
 |
Cataract Surgery: A Patient's Guide to Cataract Treatment by Uday Devgan MD (Author) With nearly three million Americans undergoing cataract surgery annually this survey is essential for those anticipating the procedure. This handbook covers the most frequently asked questions, such as What type of new lens is implanted in the eye? What type of anesthesia is used? Is there pain after the surgery? and How soon will vision improve? A photographic outline illustrating how cataracts are removed and how new intraocular lenses are implanted is also included. |
 |
Essentials of Cataract Surgery by Jae Yong, Ph.D. Kim (Author), Bonnie An, M.D. Henderson (Editor), Roberto II, M.D. Pineda (Editor), Christine, M.D. Ament (Editor), Sherleen H., M.D. Chen (Editor) Have you ever wished that the experts were sitting next to you or standing by your side during surgery? "Essentials of Cataract Surgery" is a straightforward, concise, and easy to read reference manual that is equivalent to having the best instructor guiding you on what to do next and how to avoid potential complications. "Essentials of Cataract Surgery" comprehensively covers the basics of every step of modern cataract surgery from preoperative evaluation to postoperative care. Detailed instructions and pearls are provided for each specific step. Each chapter contains a summary box which highlights the key points from each topic discussed. Additionally, images, diagrams, photographs, and tables are included to enhance understanding of specific topics. Inside "Essentials of Cataract... |
 |
Cataract Surgery: Technique, Complications, and Management by Roger Steinert (Author) Authored by a broad spectrum of highly respected contributors, this practical and easy-to-use reference includes sections on preoperative considerations, advances in the techniques and indications for ECCE and phacoemulsification, future trends for cataract extraction and management of pediatric cataracts, intraocular lenses, operative complications and the management of postoperative complications, and much more. This second edition builds upon the solid foundation of the first and brings to your fingertips the most modern, up to date advancements in the field. |
 |
Advances in Cataract Surgery (Home Use) Cataracts can affect people of any age, but are more common in the elderly. By age 80, more than half of all Americans either have a cataract or have had cataract surgery. Cataract removal is one of the most common operations performed in the United States. It's also one of the safest and most effective types of surgery. About 90 percent of those who have cataract surgery experience better vision. This program will concentrate on advances in the quality of vision and quality of life due to modern cataract surgery. This product is manufactured on demand using DVD-R recordable media. Amazon.com's standard return policy will apply. |
 |
Art Poster, Seurat Cataract Surgery Associates - 27.5 x 18.75 by ClassicPix.com FREE SHIPPING on this item when you purchase 2 or more Art Posters from ClassicPix.com. This high quality, durable Art Poster measures 18.75" x 27.50" and arrives ready to frame. Posters are printed on heavy-stock, semi-matte paper producing the best possible combination of color vibrancy and durability. All posters from ClassicPix.com are made on demand one-at-a-time, just for you -- not mass-produced. Please allow up to 5-6 days for custom printing of your poster. Though it may take a few extra days, our personal hands-on processing pays off in quality! What do our customers say? "The product I received was absolutely stunning. I can not speak highly enough about the quality of this piece of art. I would not hesitate to order from them again!" (Rated by edsynth2 on 10/10/2007.) "Item... |
|
The Audiovisual Journal of Cataract and Implant Surgery: Vol. I, Issue 4--VHS Time: 60:00. Includes Techinque, Complication, Guest Surgeon and Viewpoint/Review sections. | |
 |
Smoke Color Sun Shield Sunglasses by Sunny Product Features: UV500 lens exceeds ANSI Z80.3 UV standard for maximum UV protection Unbreakable polycarbonate lens meets ANSI Z87 safety standard for active sportswear Hard coated treatment for scratch resistance Option of wearing over prescription glasses Includes case
Color is smoke |
 |
Surgical Techniques in Ophthalmology Series: Cataract Surgery: Text with DVD by Larry Benjamin FRCS FRCOphth DO (Author) This volume in the brand-new SURGICAL TECHNIQUES IN OPHTHALMOLOGY SERIES discusses the history, development, and current techniques and technology relating to one of the most commonly performed operations in the world-cataract extraction and intra-ocular lens implantation. Descriptions, accompanied by numerous full-color illustrations, offer you step-by-step guidance on how to prepare for and carry out successful surgeries. A concise format complements the commentary and the surgical procedures on the accompanying DVD help you hone your clinical skills. Master new procedures, improve outcomes, and learn the latest techniques faster via 179 full-color illustrations and a bonus DVD containing 72 minutes of surgical procedures.Avoid complications with pros and cons, pearls and... |
|
Introduction to First Assisting in Cataract Surgery [VHS] Starring: Paul J. Wasson |
| © 2009 BrightSurf.com |