by Maureen Duffy
Hypocorisma: It's the bane of older adulthood. What is hypocorisma, you ask? Here is a helpful (and perceptive) definition from Maeve Maddox at the excellent Daily Writing Tips blog:
Hypocorisma is a type of euphemism derived from a Greek word meaning "pet name." The English word hypocorism may be defined as "the diminutive or otherwise altered version of a given name."
The use of diminutives and pet names is usually an indication of affection or intimacy, but sometimes hypocorisma is used to diminish, infantilize, or insult. For example, the same words used as endearments by family members and close friends are seen as insulting when they come from strangers.
A friendly "Hon" to frequent customers in a local restaurant is one thing, but in the workplace in general, employees, customers, and healthcare workers would be wise to avoid terms of endearment, especially when dealing with a segment of the population that is bombarded with such empty endearments.
People in their seventies and above are so often addressed in nursery language that researchers have a word for this type of hypocorisma: elderspeak.
The University of Kansas: Elderspeak and Resistance to Care
In addition to being annoying, infantilizing, disrespectful, and demeaning, elderspeak can have additional – and far more serious – deleterious effects as well. Doctors Ruth Herman and Kristine L. Williams from the University of Kansas School of Nursing explored the effects of elderspeak in the American Journal of Alzheimer's Disease & Other Dementias.
Their study, entitled Elderspeak's Influence on Resistiveness to Care: Focus on Behavioral Events, concluded that:
Resistiveness to care in older adults with dementia commonly disrupts nursing care. Research has found that elderspeak (infantilizing communication) use by nursing home staff increases the probability of resistiveness to care in older adults with dementia.
We found that older adults with dementia most frequently reacted to elderspeak communication by negative vocalizations (screaming or yelling, negative verbalizations, crying).
Because negative vocalizations disrupt nursing care, reduction in elderspeak use by staff may reduce these behaviors, thereby increasing the quality of care to these residents.
Elderspeak in Rehabilitation
As a vision rehabilitation therapist and low vision therapist whose specializes in the rehabilitation needs of older adults with vision loss, I am particularly attuned to the negative effects of elderspeak/hypocorisma. All too often, when working with older adults in community-based settings and in long-term care, I have heard the following statements – likely intended as endearments, but infantilizing nonetheless:
- "Hello, Mary dear. Maureen is here to see you. And how are we doing today, sweetie?"
- "You're looking for Martha? She's in the day room. You know, we just love Martha – she's such a sweetheart. She never gives us any trouble."
- "Ah, Thomas. He's such a sweetheart. We all love him. But I'm not sure you'll be able to do anything with him – he's blind, you know."
Soul-crushing, isn't it? I cringe when I experience such statements: ostensibly well-intentioned, but ultimately deadening. And yes, I have been called "Hon" many times when delivering vision rehabilitation services in these settings. (In case you're wondering, I am the polar opposite of sweet, demure, and accommodating.)
The New York Times Examines Elderspeak
Thus, I found it heartening to read a serious examination of the "elderspeak problem" in The New York Times. Throughout the article, entitled In 'Sweetie' and 'Dear,' a Hurt for the Elderly, author John Leland systematically debunks this infantilizing practice and clearly describes its negative effects on both quality of life and life expectancy:
Professionals call it elderspeak, the sweetly belittling form of address that has always rankled older people: the doctor who talks to their child rather than to them about their health; the store clerk who assumes that an older person does not know how to work a computer, or needs to be addressed slowly or in a loud voice. Then there are those who address any elderly person as "dear."
Now studies are finding that the insults can have health consequences, especially if people mutely accept the attitudes behind them, said Becca Levy, an associate professor of epidemiology and psychology at Yale University, who studies the health effects of such messages on elderly people.
"Those little insults can lead to more negative images of aging," Dr. Levy said. "And those who have more negative images of aging have worse functional health over time, including lower rates of survival."
In a long-term survey of 660 people over age 50 in a small Ohio town, published in 2002, Dr. Levy and her fellow researchers found that those who had positive perceptions of aging lived an average of 7.5 years longer, a bigger increase than that associated with exercising or not smoking. The findings held up even when the researchers controlled for differences in the participants' health conditions.
Despite such research, the worst offenders are often health care workers, said Kristine Williams, a nurse gerontologist and associate professor at the University of Kansas School of Nursing.
To study the effects of elderspeak on people with mild to moderate dementia, Dr. Williams and a team of researchers videotaped interactions in a nursing home between 20 residents and staff members. They found that when nurses used phrases like "good girl" or "How are we feeling?" patients were more aggressive and less cooperative or receptive to care. If addressed as infants, some showed their irritation by grimacing, screaming or refusing to do what staff members asked of them.
Dr. Williams said health care workers often thought that using words like "dear" or "sweetie" conveyed that they cared and made them easier to understand. "But they don't realize the implications," she said, "that it's also giving messages to older adults that they're incompetent." She added that patients who reacted aggressively against elderspeak might receive less care.
Elderspeak and Adult Learning Theory
Closely aligned with the issues surrounding elderspeak is "andragogy," also called adult learning theory: the art and science of teaching adults. Dr. Malcolm S. Knowles (1913-1997), widely considered to be the "Father of Andragogy" in the United States, wrote extensively about how adults learn and the differences between how adults and children learn.
One of his sharpest observations regarding the teaching of adults and older adults is also one that took me many years to truly comprehend: "Most teachers of adults have only known how to teach adults as if they were children. Most of what is known about teaching has been derived from experience with teaching children under conditions of compulsory attendance."
Essentially, there are four important differences between andragogy (teaching adults) and pedagogy (teaching children):
- Self-Concept: A child's self-concept is derived primarily from external sources. In other words, if you ask children to describe themselves, they will likely mention the school they attend, who their siblings are, and where they live. An adult's self-concept, on the other hand, is derived mainly from "internalized" life experiences. If you ask adults to describe themselves, they will likely mention the work they have done and what their life experiences have been.
- The Role of Experience: To a child, experience is something that happens to her or him. A child is still learning to internalize and use these experiences to learn more about the world. Adults, on the other hand, have accumulated and internalized vast quantities of experience, which provide a rich background for all types of learning. When working with adults, therefore, acknowledge and respect their substantial life experiences through mutual discussion and problem solving. Don't treat adult learners as "blank slates" to be filled with new knowledge that you bring to them.
- Readiness to Learn: In pedagogy, the teacher usually (but not always, of course) determines when the child is "ready to learn." The teacher decides what will be learned and when this learning will take place. In andragogy, the adult decides when he or she is "ready to learn." In vision rehabilitation, this generally happens when a specific need arises; in other words, the adult needs to know or do something "right now" in order to perform a task more effectively in his or her daily life.
- Time Perspective: In pedagogy, education is preparation for the future, or information to be stored and finally used "some day." In andragogy, learning is task-centered and involves everyday problems that require more immediate solutions. Therefore, teachers of adults help learners move toward independent self-direction and determine what it is that they need to learn in the present – which may not necessarily be what family members or other professionals want the adult to learn.
So What's the Takeaway?
First, examine your own speech and attitudes for any tendency to use elderspeak. As John Leland says, "Words matter. So does context. Terms of endearment are probably best reserved for the people we hold dear."
Next, if you teach adults and older adults in any capacity, examine your attitudes toward your adult learners. Ask yourself these questions:
- Has the way you learned as a child affected or had an influence upon your adult professional behavior in education or rehabilitation?
- Do any of Dr. Malcolm Knowles's descriptions of adult learners describe you?
- Reflect on a professional issue that you have addressed recently with an adult or older adult. Could you rethink your actions in light of these andragogical principles?
What have I learned after all these years? Essentially, that my role is to "get out of the way." People know what they need to learn. I'm just the facilitator. In truth, I've gone from thinking I knew everything about vision rehabilitation to finally realizing I don't know very much at all. Learning, for me, is a forever process.
by Maureen Duffy
On October 14, 2014, Advanced Cell Technology, Inc. announced positive results from its small (18-patient) early-stage clinical trials of human embryonic stem cells (hESC) for the treatment of dry age-related macular degeneration and Stargardt disease.
Advanced Cell Technology, Inc. (ACT) is a Massachusetts-based clinical-stage biotechnology company focused on the development of regenerative medicine and cell therapy technology. ACT's most advanced products are in clinical trials for the treatment of dry age-related macular degeneration, Stargardt disease, and myopic macular degeneration.
Although the primary goal of this small early-stage clinical trial was to assess the safety of the transplanted stem cells, the treatment also had unexpected positive benefits: Ten out of 18 study participants reported improvements in vision, with some subjects reporting dramatic improvements. In addition, the treatment appears to have halted the progression of the disease in 17 of the 18 subjects.
Please note: Although this stem cell research has produced promising results thus far, it is in its very earliest stages and must be subjected to additional, longer-term, more demanding clinical trials, encompassing many more years of study.
The Research: The Lancet
The research, entitled Human embryonic stem cell-derived retinal pigment epithelium in patients with age-related macular degeneration and Stargardt's macular dystrophy: follow-up of two open-label phase 1/2 studies (explained below), has been published online ahead of print in the October 15, 2014 issue of The Lancet.
The Lancet, which has been published continuously for 180 years, is one of the world's leading independent medical journals, without affiliation to a medical or scientific organization. The journal, which is committed to international health concerns, publishes high-quality clinical trials that influence the course of medical practice.
The authors are Steven D. Schwartz, Carl D. Regillo, Byron L. Lam, Dean Eliott, Philip J. Rosenfeld, Ninel Z. Gregori, Jean-Pierre Hubschman, Janet L. Davis, Gad Heilwell, Marc Spirn, Joseph Maguire, Roger Gay, Jane Bateman, Rosaleen M. Ostrick, Debra Morris, Matthew Vincent, Eddy Anglade, Lucian V. Del Priore, and Robert Lanza.
The authors represent the following institutions: Jules Stein Eye Institute and David Geffen School of Medicine, University of California, Los Angeles; Wills Eye Hospital and Thomas Jefferson University, Philadelphia, PA; Bascom Palmer Eye Institute, Miami, FL; Massachusetts Eye and Ear Infirmary and Harvard Medical School, Boston, MA; Advanced Cell Technology, Marlborough, MA; and Storm Eye Institute, Medical University of South Carolina, Charleston, SC.
First, Some Background and History
Since November 2010, VisionAware has followed Advanced Cell Technology's (ACT) quest to implement successful clinical trials for macular eye disease, using human embryonic stem cells. ACT's US Phase 1/2 clinical trials for Stargardt disease and dry age-related macular degeneration (AMD) involved a total of 18 patients, in groups of three (also called cohorts in research terminology). The first group/cohort received a dosage of 50,000 cells; the second received 100,000 cells; and the third received 150,000 cells.
To better understand this latest development, here is background information from prior VisionAware blog posts about ACT's initial stem cell clinical trial for Stargardt disease, its subsequent clinical trial for dry age-related macular degeneration, and a 2013 update about the status of all ACT ongoing clinical trials:
On November 22, 2010, the U.S. Food and Drug Administration (FDA) lifted a prior clinical hold on stem cell research to clear Advanced Cell Technology's Investigational New Drug (IND) application and initiate a Phase 1/2 multicenter study, using retinal cells derived from human embryonic stem cells to treat patients with Stargardt disease. ACT's product is a human embryonic stem cell trained to become a retinal cell.
On January 3, 2011, ACT announced that they had received FDA clearance for yet another new clinical trial, this time using embryonic stem cells to treat dry AMD.
More about the Research
From Groundbreaking stem-cell research, via Boston Business Journal:
Advanced Cell Technology (ACT) [has] announced results from an early-stage trial indicating that its treatment helped improve vision in 10 out of 18 patients with two kinds of macular degeneration. ACT's embryonic stem cell-based treatment was administered at least six months ago in all 18 patients, although the median period was 22 months and two of the patients were treated more than three years ago.
[Editor's note: Called retinal pigment epithelial cells, these cells are created by taking stem cells from a days-old embryo created in a fertility clinic and inducing the embryonic cells to differentiate into more specialized cells.]
All 18 patients in the Phase 1/2 trial have either Stargardt's macular degeneration, an inherited disorder, or dry age-related macular degeneration, neither of which have any effective treatments on the market today. The patients received a transplant of … retinal pigment epithelium (or RPE) cells, which protect photoreceptors in the eye, using ACT's cells made from embryonic stem cells.
The main goal of the study was to show that process is safe, but the treatment appeared to have stopped progression of the disease in 17 out of 18 of the patients. In addition, the majority of them performed better on the Early Treatment Diabetic Retinopathy Study (ETDRS) visual acuity exam.
The ETDRS Eye Chart
The trial data not only represents a victory in eye treatments, it’s also the first evidence of long-term safety, survival, and biologic activity in humans of stem cells in any disease.
More about the Study from The Lancet
From the research summary:
Background: Since they were first derived more than three decades ago, embryonic stem cells have been proposed as a source of replacement cells in regenerative medicine, but their plasticity and unlimited capacity for self-renewal raises concerns about their safety, including tumor formation ability, potential immune rejection, and the risk of differentiating into unwanted cell types. We report the medium-term to long-term safety of cells derived from human embryonic stem cells (hESC) transplanted into patients.
Methods: In the USA, two prospective phase 1/2 studies were done to assess the … safety and tolerability of subretinal transplantation of hESC-derived retinal pigment epithelium in nine patients with Stargardt's macular dystrophy (age >18 years) and nine with atrophic age-related macular degeneration (age >55 years).
Three dose cohorts (50,000, 100,000, and 150,000 cells) were treated for each eye disorder. Transplanted patients were followed up for a median of 22 months by use of serial systemic, ophthalmic, and imaging examinations.
Findings: There was no evidence of adverse proliferation, rejection, or serious ocular or systemic safety issues related to the transplanted tissue. Adverse events were associated with vitreoretinal surgery and immunosuppression. 13 (72%) of 18 patients had patches of increasing subretinal pigmentation consistent with transplanted retinal pigment epithelium.
Best-corrected visual acuity, monitored as part of the safety protocol, improved in ten eyes, improved or remained the same in seven eyes, and decreased by more than ten letters in one eye, whereas the untreated fellow eyes did not show similar improvements in visual acuity.
Vision-related quality-of-life measures increased for general and peripheral vision, and near and distance activities, improving by 16-25 points 3 to 12 months after transplantation in patients with atrophic age-related macular degeneration and 8-20 points in patients with Stargardt's macular dystrophy.
Interpretation: The results of this study provide the first evidence of the medium-term to long-term safety, graft survival, and possible biological activity of [stem cells] in individuals with any disease. Our results suggest that hESC-derived cells could provide a potentially safe new source of cells for the treatment of various unmet medical disorders requiring tissue repair or replacement.
About Clinical Trials
Most clinical trials are designated as Phase 1, 2, or 3, based on the questions the study is seeking to answer:
- In Phase 1 clinical trials, researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe and effective dosage range, and identify possible side effects.
- In Phase 2 clinical trials, the study drug or treatment is given to a larger group of people to determine if it is effective and to further evaluate its safety.
- In Phase 3 studies, the study drug or treatment is given to even larger groups of people (1,000-3,000) to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
- In Phase 4 studies, after the United States Food and Drug Administration (FDA) has approved the drug, continuing studies will determine additional information, such as the drug's risks, side effects, benefits, and optimal use.
VisionAware will provide updates on this important stem cell research as they become available.
Additional Information about Stem Cell Research
by Maureen Duffy
Every year, during Eye Injury Prevention Month – and as Halloween approaches – I begin fielding questions from neighbors, friends, and colleagues about the safety of circle (also called "cosmetic" or "costume") contact lenses. For the uninitiated, "circle lenses," which first became popular in Asia approximately ten years ago, are contact lenses that give the wearer a doll-eyed or doe-eyed "innocent" look:
Venus Palermo, the "Human Barbie Doll"
What are Circle or Cosmetic Contact Lenses?
Here is more information about circle lenses from Wikipedia:
Circle contact lenses, also known as "big-eye contact lenses" and "circle lenses," are cosmetic contact lenses that make the eye's iris appear larger. They have become a trend in Japan, South Korea, and China, and are largely produced in these countries.
Circle lenses are tinted not only in areas that cover the iris of the eye, but also prominently in the extra-wide outer rim of the lens. The result is the appearance of a bigger, wider iris and creation of an illusion of large eyes.
The lenses are popular among teenagers and young adults. Many people consider circle lens to be a fashion accessory, rather than a medical device.
According to CBS News Medical Correspondent Dr. Jennifer Ashton, circle lenses "…make the eyes look very large, and it's because the contact lens part actually extends beyond the iris or the colored part of the eye and in doing so, makes the eye look a little bit larger. It's purely cosmetic."
Examples of circle lenses
Lady Gaga and Circle Lenses
As part of my research into the growing popularity of cosmetic contact lenses, I revisited Lady Gaga's Bad Romance video and discovered that she was indeed wearing what appeared to be "anime-style" circle lenses:
But there's a problem: They're illegal in the United States and can cause severe and permanent eye damage. The New York Times was among the first news organizations to address these issues in an article by Catherine Saint Louis, entitled What Big Eyes You Have, Dear, but Are Those Contacts Risky?:
Of all the strange outfits and accessories Lady Gaga wore in her "Bad Romance" video, who would have guessed that the look that would catch fire would be the huge anime-style eyes she flashed in the bathtub?
These lenses might be just another beauty fad if not for the facts that they are contraband and that eye doctors express grave concern over them. It is illegal in the United States to sell any contact lenses — corrective or cosmetic — without a prescription, and no major maker of contact lenses in the United States currently sells circle lenses.
Sites that sell contact lenses approved by the Food and Drug Administration (FDA) are supposed to verify customers' prescriptions with their eye doctors. By contrast, circle lens websites allow customers to choose the strength of their lenses as freely as their color.
A Definitive Statement from the American Academy of Ophthalmology
The American Academy of Ophthalmology (AAO) has repeatedly warned the public about the many risks associated with the use of costume contact lenses during the Halloween party season. From Four Frightening Ways Non-Prescription Costume Contact Lenses Can Ruin Your Vision:
To avoid a real-life Halloween horror story – going blind because of a costume accessory – the American Academy of Ophthalmology is warning the public against wearing costume contact lenses purchased without a prescription. These illegally-sold cosmetic lenses may not be sterile and can cause a host of serious eye problems capable of morphing a fun Halloween night into a nightmare.
Tiger eyes, checkered pupils: Non-prescription decorative lenses (also called cosmetic, costume or plano contact lenses) come in many different patterns and colors.
In 2005, after reports of them causing eye injuries and infections, the FDA classified all contact lenses as medical devices and restricted their distribution to licensed eye care professionals, effectively banning sales of non-prescription contact lenses.
Despite that, these items remain available on the Internet, in convenience stores, and at flea markets. Here are four frightening ways that non-prescription decorative lenses can hurt your eyes:
- Scratches: Because over-the-counter lenses are not fitted and sized for the person wearing the contacts, they can easily scrape the outer layer of the eye. The resulting corneal abrasions can cause redness, light sensitivity, discharge, pain, plus the feeling that something is stuck under the eyelid.
- Sores: Costume contact lenses can literally create an eye sore called a corneal ulcer, with symptoms similar to corneal abrasions. The ulcers sometimes appear as a white dot on the iris – the colored part of the eye. When the ulcers heal, they can scar over and can in some cases permanently affect vision.
- Infections: Both corneal abrasions and ulcers create openings in the eye, making them more vulnerable to bacteria, viruses and amoebas. All of these organisms can cause serious eye infections known as keratitis. Some infections, such as herpes simplex, can be recurring and difficult to eradicate, while a number of bacteria have become resistant to common antibiotics.
- Blindness: In the most extreme cases, complications from wearing costume contact lenses may require surgery or end in blindness. For instance, extensive scarring from an infection can distort the cornea or make it opaque, requiring a corneal transplant to restore vision.
Complications from Cosmetic/Costume Contact Lenses
Because most purchases of cosmetic, costume, and circle contact lenses are neither prescribed nor regulated, eye infections are more common than you might think. And infections, in some cases, can lead to blindness. Here are some additional complications that can occur from purchasing online or "over-the-counter" contact lenses:
- chronic dry eye
- extreme sensitivity to light
- depriving the cornea of sufficient oxygen, which can lead to infection and blindness
Cosmetic/Costume Contact Lens Safety Guidelines
To wear decorative contact lenses safely this Halloween, or any time of year, the American Academy of Ophthalmology recommends following these guidelines:
- Only buy decorative contact lenses from an eye care professional, such as an ophthalmologist or optometrist, or a retailer that requires a prescription and sells FDA-approved products.
- If you don't already have a contact lens prescription, obtain a valid prescription and eye exam from an ophthalmologist or optometrist.
- Even if you have [regular or unimpaired] vision, a [comprehensive] eye exam and prescription are mandatory in order to fit the right size contacts. Do not fall victim to false advertising claims and lenses labeled as "one size fits all" or "no need to see an eye specialist."
- Follow the directions for cleaning, disinfecting and wearing the lenses. Contacts that are left in for too long or that are not properly cleaned and disinfected can significantly increase the risk of an eye infection.
- Never share contact lenses with another person or wear expired lenses.
- If you notice redness, swelling, excessive discharge, pain or discomfort from wearing contact lenses, remove the lenses and seek immediate medical attention. Eye infections like keratitis can become serious quickly and cause blindness if left untreated.
To all of our valued readers: Please have a happy – and safe – Halloween by following these critically important safety guidelines. Enjoy your holiday!
Note: Lady Gaga Bad Romance is a screenshot from a copyrighted music video or promotional video for a music artist. The use of a limited number of web-resolution screenshots for identification and critical commentary on the music video qualifies as fair use under United States copyright law.
Note: Circle contact lens and Venus Palermo photos are licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.
by Maureen Duffy
A group of United States-based researchers has discovered a direct correlation with functional cell loss in the retina and signs of dementia in people with a genetic risk for fronto-temporal dementia (FTD).
The study also demonstrates that changes in the retina occur much earlier than do the dementia-related changes that appear in an individual's behavior.
The Journal of Experimental Medicine
This cutting-edge eye/brain research was published in the September 2014 issue of The Journal of Experimental Medicine. Since its inception in 1896 at the Johns Hopkins School of Medicine, The Journal of Experimental Medicine has published papers on the physiological, pathological, and molecular aspects of disease. The journal is also committed to publishing studies that involve human subjects. You can read more about the journal's history on its Wikipedia page.
The authors are Michael E. Ward, Alice Taubes, Robert Chen, Bruce L. Miller Chantelle F. Sephton, Jeffrey M. Gelfand, Sakura Minami; John Boscardin, Lauren Herl Martens, William W. Seeley, Gang Yu, Joachim Herz, Anthony J. Filiano, Andrew E. Arrant, Erik D. Roberson, Timothy W. Kraft, Robert V. Farese Jr., Ari Green, and Li Gan, who represent the following institutions: University of California, San Francisco; University of Texas Southwestern Medical Center, Dallas; and the University of Alabama at Birmingham.
What is Fronto-Temporal Dementia?
Excerpted from Frontotemporal Dementia at the Alzheimer's Association website:
Frontotemporal dementia (FTD) is a group of disorders caused by progressive cell degeneration in the brain's frontal lobes (the areas behind your forehead) or its temporal lobes (the regions behind your ears).
The cell damage caused by frontotemporal dementia leads to tissue shrinkage and reduced function in the brain's frontal and temporal lobes, which control planning and judgment; emotions, speaking and understanding speech; and certain types of movement.
FTD used to be called Pick's disease after Arnold Pick, a physician who in 1892 first described a patient with distinct symptoms affecting language. Some doctors still use the term "Pick's disease." FTD was once considered rare, but it's now thought to account for up to 10 to 15 percent of all dementia cases.
There is no single test — or any combination of tests — that can conclusively diagnose frontotemporal dementia. FTD is a "clinical" diagnosis representing a doctor's best professional judgment about the reason for a person's symptoms. Magnetic resonance imaging (MRI) often plays a key role in diagnosis because it can detect shrinkage in the brain's frontal and temporal lobes, which is a hallmark of FTD.
In some cases, it may be hard to distinguish FTD from Alzheimer's disease. In the future, tests to detect specific protein abnormalities linked to Alzheimer's and FTD may help clarify the diagnosis in difficult cases. Most people with FTD are diagnosed in their 50s and early 60s. Only about 10 percent are diagnosed after age 70. Alzheimer's, on the other hand, grows more common with increasing age.
More about the Research
Changes in the eye might predict onset of frontotemporal dementia, via the University of Alabama at Birmingham (UAB) School of Medicine News:
Changes to the eyes might help diagnose the onset of frontotemporal dementia (FTD), the second most common form of dementia, according to new research from scientists at the University of Alabama at Birmingham, Gladstone Institutes, and the University of California, San Francisco. Findings … show that a loss of cells in the retina is one of the earliest signs of FTD in people with a genetic risk for the disorder – even before any changes appear in their behavior.
The researchers studied a group of individuals who had a certain genetic mutation that is known to result in FTD. They discovered that, before any cognitive signs of dementia were present, these individuals showed a significant thinning of the retina compared with people who did not have the gene mutation.
"This finding suggests that the retina acts as a type of window to the brain," said [co-author] Erik Roberson. Retinal degeneration was detectable in mutation carriers prior to the onset of cognitive symptoms, establishing retinal thinning as one of the earliest observable signs of familial FTD," he said. "This means that retinal thinning could be an easily measured outcome for clinical trials."
Although it is located in the eye, the retina is made up of neurons with direct connections to the brain. This means that studying the retina is one of the easiest and most accessible ways to examine and track changes in neurons.
[Editor's note: The researchers used an electroretinogram (ERG) as the measuring device in their subjects. An ERG is an "electrocardiogram (EKG) for the eye" that measures the electrical signal activity of ganglion cells, a type of neuron located near the inner surface of the retina. Ganglion cells transmit image-forming and non-image forming visual information to the brain.
The researchers compared ganglion cell activity in healthy subjects with subjects known to have frontotemporal dementia, noting a significant decrease in cell activity in the retina of subjects with dementia.]
"We have a more complete understanding about how the retina functions as opposed to the operations of the complex brain,” said [co-author] Timothy Kraft. "That makes it much easier to use the retina as a tool for better understanding FTD."
"The results of this study have shown that we can use the thinning of retinal cells as a marker for this type of dementia," said Roberson. "Further studies may also help determine whether the changes in the retina can be utilized as a marker of disease progression. We may also be able to use the retina as a means of gauging the effectiveness of new therapies."
VisionAware will continue to report the results of this innovative dementia research as they become available.
by Maureen Duffy
White Cane Safety Day is an international observance that is celebrated on October 15 of each year since 1964. Its purpose is to (a) celebrate the achievements of people who are blind or visually impaired and (b) acknowledge and pay tribute to the long white cane, a critically important mobility tool and potent symbol of independence.
In 2011, White Cane Safety Day was also declared Blind Americans Equality Day by President Barak Obama.
Here is more information about the history of White Cane Safety Day from the National Federation of the Blind:
The National Federation of the Blind in convention, assembled on July 6, 1963, called upon the governors of the 50 states to proclaim October 15 of each year as White Cane Safety Day in each of our 50 states. On October 6, 1964, a joint resolution of the Congress, H.R. 753, was signed into law authorizing the President of the United States to proclaim October 15 of each year as "White Cane Safety Day."
This resolution said: "Resolved by the Senate and House of Representatives, that the President is hereby authorized to issue annually a proclamation designating October 15 as White Cane Safety Day and calling upon the people of the United States to observe such a day with appropriate ceremonies and activities."
Within hours of the passage of the congressional joint resolution authorizing the President to proclaim October 15 as White Cane Safety Day, then-President Lyndon B. Johnson recognized the importance of the white cane as a staff of independence for blind people.
A History of Orientation and Mobility
The profession of Orientation and Mobility began to develop during, and immediately after, World War II.
Soldiers who had been blinded in battle were sent to recuperate at Valley Forge Army General Hospital before entering Avon Old Farms Convalescent Hospital, the U.S. Army's former experimental rehabilitation center for blind soldiers in Avon, Connecticut.
In order to better serve the large number of blind soldiers who required special training and services, the military recruited Richard E. Hoover, an army sergeant, who was assigned to the center for the treatment of blinded soldiers at Valley Forge Army Hospital in 1944.
During the same year, Russell Williams, who was blinded by enemy action in France, received medical rehabilitation at the Valley Forge Army Hospital, and in 1947, C. Warren Bledsoe joined the Hospital. These three men made significant contributions to the development of a new profession: Orientation and Mobility.
The war-blinded soldiers were highly motivated to be successful, and Richard Hoover believed that the traditional strategies taught and used to travel independently were inadequate. In response, he developed a technique for using a cane that was lightweight and longer than a support cane. This technique and cane revolutionized independent travel for blind people and remain in use today.
You can learn more about the history and development of the profession of Orientation and Mobility at the VisionAware website.
Does the Cane Have to Be White to Be Effective? An Answer from Dona Sauerburger, COMS
Dona is a Certified Orientation and Mobility Specialist (COMS) who provides itinerant orientation and mobility services to blind and visually impaired adults and teenagers.
She is the author of An Introduction to Orientation and Mobility Skills on the VisionAware website and Independence without Sight or Sound: Suggestions for Practitioners Working with Deaf-Blind Adults, which received the C. Warren Bledsoe Publication Award.
Canes for Outdoor Travel
When used properly, a cane can provide information and protection, regardless of its color – it does not have to be white to be effective. Most canes used by blind people are white, but they are also available in red, black, yellow, and blue. For example, these canes (pictured below) from AmbuTech are available in a range of colors.
However, only a white cane identifies the user as a person who is blind or has low vision. This can be an important consideration when crossing streets and requesting information from store clerks, bus drivers, and the general public.
It's likely that people will be more willing to help if they realize you're asking for information because you are blind or have low vision.
About "White Cane Laws"
Many people are under the impression that each state's White Cane Law contains a provision that requires drivers to stop for, and/or yield to, pedestrians who are carrying white canes. This is not correct. The laws in each state vary widely and drivers do not always reliably stop for pedestrians who carry white canes.
When drivers see pedestrians who are carrying white canes:
- Some states require that drivers yield.
- Some states require drivers to come to a full stop.
- Some states require only that drivers exercise caution when in the presence of pedestrians with white canes.
- Some states provide no special rights and protections to pedestrians who are carrying white canes that are not provided to all pedestrians.
Check your state's White Cane Law to determine the language that describes driver and pedestrian rights and responsibilities.
Photo credit: AmbuTech. Used with permission.
Additional Orientation and Mobility Information
- The VisionAware Directory of Services includes information about Orientation and Mobility instruction.
- What Will People Think About Me if I Use a White Cane?
- Low Vision and the White Cane: A Tool for Fall Prevention
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