Showing posts with label AMD. Show all posts
Showing posts with label AMD. Show all posts

Friday, March 29, 2013

When Blindness Comes Too Soon - A Story About Macular Degeneration


When Blindness Comes Too Soon


When 24-year-old Amy Bower sat down for a routine eye exam, she never expected that her blurry vision was actually the onset of a disease that would leave her legally blind.
A graduate student at the University of Rhode Island, Bower feared she may be forced to abandon her dreams and the exciting oceanographic career she loved.
Now, more than 20 years later, Bower is an oceanographer at the Woods Hole Oceanographic Institute in Massachusetts -- and a poster child for vision rehabilitation.
"When I first heard that I had macular degeneration, I thought, 'What's that?'" she said. "I had never heard of anyone with this disease.
"When I heard that my vision was going to continue to degenerate with no real prediction of how far, I was pretty scared... and quite sad."
Age-related macular degeneration or AMD is among the leading causes of blindness in the United States, and the number one cause of blindness among Caucasians. About 1.8 million Americans suffer from AMD, and another 7 million are at a significant risk of developing the disease, according to the National Eye Institute at the National Institutes of Health.
PHOTO Blind oceanographer, Dr. Amy Bower, is shown.
Amy Bower and the Woods Hole Oceanographic Institute
Oceanographer Amy Bower began losing her vision in her teens -- but she has not let her impending blindness ruin her career goals.
"The disease slowly destroys the central portion of a person's vision, affecting their ability to read, drive and recognize faces," explained Dr. Gerald Friedman, a Boston low vision specialist who treated Bower when she was first diagnosed.
What sets Bower apart is that she has the rarer juvenile form of the disease, which strikes earlier than most. Currently, there are no approved drugs or therapies that can help her.
The signs were there. Bower had suffered blurry vision since her teens. But shortly after the official diagnosis in her early twenties, her vision took a very rapid turn for the worse.
"Before I knew it, I couldn't read the text in a paperback book," Bower said. "Then, within two years, even by adjusting the text on a computer screen, I couldn't read the words on the computer."
That's when she turned to Friedman, one of the few specialists in the country who focus solely on low vision rehabilitation.

Working Through Macular Degeneration

"Most people who are legally blind have some degree of vision left, so my job is to find where that vision is and design a method to use it," Friedman said.
In Amy's case, she also suffered from a condition called retinitis pigmentosa, which degrades the peripheral vision, leaving her with just a thin ring of usable vision.
"Most people define successful rehabilitation as being able to read their favorite book, or recognize their family members," Friedman said. "But Amy's particular needs were a huge challenge because she was going to be on board research vessels and using all kinds of equipment -- so we threw everything we had at her in terms of technology and she just absorbed it."
Today, Bower travels the world, leading scientific missions on sea currents -- and she does it all by using adaptive equipment and other resources.
Large video magnifiers allow Bower to read data printouts and graphics mapping deep sea temperatures. Meanwhile, powerful computer voice and magnification software allow her to use the computer just as well, if not better than most fully sighted people.
"If it weren't for these powerful programs, I wouldn't be able to do my job."Bower is currently looking forward to new adaptive technologies that would make data readouts more tactile, possibly eliminating the need for video magnifiers. She is also hopeful about new retinal transplant studies, for which the first clinical human trials are currently underway in Europe.
"The stem cell trials are the most promising hope for a treatment," said Dr. Marc Gannon, director of the Low Vision Institute in Fort Lauderdale, Fla. "Not only might we be able to repair vision that's already been lost, but this research could help identify the genetics that cause the early or juvenile forms of the disease, helping us to stop the vision loss before it even begins."For now, Bower, who is also a married mother of one, said support from her family and her employers at the institute, who helped purchase most of her equipment, has been key.
"For anyone who finds themselves in the situation I was in 25 years ago, they need to learn to become a very strong self-advocate," Bower said. "And hopefully, you want to pursue something that you're passionate about, because you're going to need the energy that comes from such a passion to push through the challenges."

Tuesday, February 26, 2013

Protect Your Vision From AMD (Age-Related Macular Degeneration)

PBA designates February AMD Awareness Month

Prevent Blindness America (PBA, Chicago) has again designated February as Age-related Macular Degeneration (AMD) Awareness Month in an effort to point out the symptoms, risk factors, and treatment options for older adults who experience low vision or are candidates for vision loss. AMD is the leading cause of blindness in adults 65 years of age or older.

Healthy Lifestyle Changes can Help Protect Vision from Age-related Macular Degeneration

CHICAGO(Jan. 31, 2013)– More than 2 million Americans, ages 50 and over, have AMD, a 25 percent increase from the last decade, according to the 2012 Vision Problems in the U.S. report from Prevent Blindness America.  And, AMD is the leading cause of vision loss and blindness for those ages 65 and older.
Prevent Blindness America has declared February as Age-related Macular Degeneration Awareness Month, Prevent Blindness America offers a dedicated online resource for patients and caretakers to learn more about the disease.  The website,preventblindness.org/amd, provides a variety of tools and information on everything from risk factors, treatment options, and even a downloadable Amsler Grid, (a tool that can help identify vision abnormalities linked to AMD). 
Those with AMD may experience the following symptoms:
  • Straight lines, such as a flag pole or streetlight, may appear wavy
  • A dark or empty spot may block the center of vision
  • Written words or type may appear blurry
There are two forms of AMD: "dry" and "wet. Dry AMD is the most common form of the disease. It involves the presence of drusen – fatty deposits that form under the light-sensing cells in the retina. Vision loss in dry AMD usually progresses slowly. Wet AMD is less common, but more rapidly threatening to vision. Wet AMD causes tiny blood vessels under the retina to leak or break open. This distorts vision and causes scar tissue to form. Although there are treatments for AMD, there is no cure.
“Fortunately, steps we can take today to maintain our overall health can directly benefit the eyes,” said Hugh R. Parry, president and CEO of Prevent Blindness America.  “We encourage all adults to make an appointment with their eye doctor today to develop a plan to protect vision for a lifetime.”
To maintain healthy eyes and lower the risk of eye disease, Prevent Blindness America recommends that everyone:
  • Visit an eye doctor regularly
  • Stop smoking
  • Eat healthy foods, including foods rich in certain antioxidants
  • Stay active
  • Control the blood pressure
  • Protect the eyes from the sun by wearing UV-blocking sunglasses and a brimmed hat
For more information on AMD and other eye disease, please contact Prevent Blindness America at (800) 331-2020 or visitpreventblindness.org/amd.

Monday, February 18, 2013

Visual Impairment and Reading

We take care of may people who have various degrees of visual impairment. The most common of these is Age-Related Macular Degeneration, or AMD. People with AMD typically have more difficulty with their distance vision than they do up close, but as it gets worse it can start to affect their ability to read. In the earlier stages of AMD the best visual aid for reading is a very good reading light! We still like Halogen lamps because they have a very bright, flat white light. Some of the newer LED lights are also very good (we do NOT like any of the mini-fluorescent bulbs for reading at all).

The introduction of all of the electronic readers has been simply marvelous for all kinds of visually-related reading problems. You no longer have to seek out large print versions of books, magazines, or newspapers. Now you just increase the size of the print on your Kindle, Nook, Sony Reader, or iPad. Most of the e-Readers still require a good light source. If you are using a Kindle or Sony Reader, for example, you should still try to find a nice Halogen lamp to use when you are reading.

There is now some very good research that shows that an e-Reader that is BACKLIT allows people who have a visual impairment like AMD to read faster and more accurately. The Apple iPad is the best known. and probably most versatile of the backlit readers. We have had great feedback from those patients who have taken our advice and tried the iPad. Over the next several months the SkyVision staff will be test-driving the iPad apps that are designed to help folks with AMD read better.