From Robert M. Kershner, MD, FACS Eye Laser Center, Suite 303, 1925 West Orange Grove Road, Tucson, AZ 85704-1152, Phone: (520) 797-2020, FAX: (520) 797-2235, e-Mail: info@AsiteForEyes.com Website: http:www.EyeLaserCenter.com
Macular Degeneration is an eye condition in which the macula, a sensitive area in the retina responsible for central and detail vision, is damaged, often causing loss of central vision.
Most common in people over 50, but can appear as early as age 40. As life expectancy increases, the disease is becoming a significant problem.
No conclusive proof exists. However, some scientists believe heredity may play a part, as well as UV light exposure and nutrition. Studies are ongoing.
Blurred or fuzzy vision; straight lines, such as sentences on a page or telephone poles, appear wavy; blind spot in the center of vision.
Because the US Food and Drug Administration has approved Visudyne use for PDT as safe and effective, PDT may become more widely available to patients. However, it is not a good choice for everyone. Your Eye M.D. can tell you if you might be a good candidate for treatment.
Be wary of any treatment that promises to restore vision, cure or prevent macular degeneration. There are many so-called "miracle cures" advertised (often in magazines or on the Internet) that have not been adequately tested for safety or efficacy. These treatments may be expensive and are generally not covered by insurance. If you are considering trying a new or untested treatment make sure you talk to your Eye M.D. to ensure they are safe and won't interfere with timely and effective treatment of other eye problems.
There is a great deal of research and several major scientific studies being conducted to find the causes and develop effective treatments for all types of macular degeneration. Visit the National Eye Institute Web site for additional information
Low Vision Rehabilitation
Can help people who have experienced mild to severe vision loss adjust to their condition and continue to enjoy active and independent lifestyles. Rehabilitation may involve anything from adjusting the lighting in your home to learning to use low vision aids to help you read and perform daily tasks. Your Eye M.D. can arrange rehabilitation or refer you to organizations that can help.
Adjusting to vision loss can be difficult at first. Your Eye M.D. may be able to recommend some support groups for people with low vision. You can support friends and family by encouraging them in their rehabilitation efforts and providing help (such as rides to appointments) when needed.
Scientists have long debated whether taking vitamin and/or mineral supplements could help prevent, treat or cure certain eye conditions. Some early scientific studies seemed to show that supplements had the potential to prevent or slow the progression of cataract and age-related macular degeneration (AMD), although more complete study was needed to answer some important questions:
What Is AREDS?
The Age-Related Eye Disease Study (AREDS) is a major study sponsored by the National Eye Institute (NEI), one of the Federal government's National Institutes of Health, and conducted at 11 major medical center research facilities around the country.
In the study, scientists looked at the effects of zinc and antioxidants, and a combination of both, on patients with cataracts, and on those with varying stages and types of age-related macular degeneration (AMD). They also studied patients without evidence of cataract or AMD to determine if zinc and/or antioxidants can prevent the development of these conditions.
What Were the Results?
The study showed a number of important things:
If you have intermediate (or advanced AMD in one eye only), talk to your physician about taking nutritional supplements. He or she can help you determine if they may be beneficial — and safe — for you, and what types and doses of supplements to take. The doses used in the study were:
Smokers and ex-smokers probably should not take beta-carotene, as studies have shown a link between beta-carotene use and lung cancer among smokers.
Where Can I Get More Information?
Your Eye M.D. is your best source of information about eye care.Call us at (520) 797-2020 or reach us on the web at:
More information on AREDS is available from the National Eye Institute of the
National Institutes of Health,
Unfortunately, the cause of macular degeneration is unknown. Although your ophthalmologist will be able to readily detect the disease during an eye exam, he or she won't be able to cure it. The goal is to help the patient see better and stabilize the condition.
Although there is no proven treatment for dry macular degeneration, some people believe that antioxidants or zinc supplements may help.
Out-patient laser surgery may be an option for people with more severe wet macular degeneration. The laser beam is used to destroy the abnormal blood vessels and works best when these vessels have not grown under the macula.
Laser surgery is less helpful when the abnormal blood vessels have already grown under the macula. In this case, the laser might cause as much damage as the presence of abnormal blood vessels. This is why early diagnosis is so important.
The "good" news about macular degeneration is that even though people who have it experience mild to severe vision loss, macular degeneration does not affect peripheral, or side vision. One does not go blind. With the help of low vision aids, people can continue to enjoy many of their favorite activities and can still lead normal, independent lives.
Most of low vision aids combine magnification and bright lights. But vision aids aren't like glasses which allow you to see whatever you're looking at when you put them on. One kind of vision aid may be helpful when you read but totally ineffective when you watch TV or focus on something in the distance. People need to try different types for different situations.
At this time there is no cure for the "dry" form of age-related macular degeneration (AMD), but research continues to take place. Some evidence suggests that certain vitamin supplements, such as zinc and antioxidant vitamins, can help slow the progression of the disease. Studies also suggest that wearing appropriate sunglasses to protect your eyes from the sun's ultra-violet rays can be helpful.
If caught early, the "wet" form of macular degeneration can sometimes be treated with photodynamic therapy or laser surgery, which may delay or reduce the severity of the disease.
Macular degeneration appears to be hereditary, in most cases. In the early stages, usually no signs of vision problems appear. Because no symptoms occur at the start of the disease, it is important to have regular eye exams with your Eye M.D. Even if you don't have a family history of AMD, see an Eye M.D. to prevent future vision loss.
Certain factors other than hereditary seem to play a role in the development of the disease: