Showing posts with label ophthalmology. Show all posts
Showing posts with label ophthalmology. Show all posts

Monday, July 06, 2015

An Architect Lost His Sight and Kept Working Thanks to Breakthrough Technologies for the Blind

WRITTEN BY:
JULY 5, 2015
ORIGINALLY PUBLISHED INTODAY'S SMART HOUSE
AS
CHRIS DOWNEY
As one of the few blind practicing architects in the world, Chris Downey occupies a unique place in design. When he lost his sight in 2008, Downey, who is based in San Francisco, began using his own experiences to transform interior and exterior spaces for those with—and without—visual impairments. Here, he shares his expertise on new and emerging technologies that could improve life for all of us.

Wednesday, June 03, 2015

Color Vision Articles from Science Daily

When the color we see isn't the color we remember


Brain, not eye mechanisms keep color vision constant across lifespan


Bach to the blues, our emotions match music to colors

Tuesday, June 02, 2015

Smart Glove to Guide Blind People Inside Grocery Stores

Researchers at Penn State are working on a smart glove that can help blind people shop at the grocery store. The idea came because figuring out what items are on the shelves is a major limitation blind people report as wanting to be able to overcome. There are products in existence that can scan bar codes and tell you what’s inside the package, but they depend on the bar code facing the camera or laser used to scan it. The other problem is that these products don’t help you find what you’re looking for, but simply verify that what you’re holding is the right thing.
link

Thursday, April 30, 2015

Pixium Vision Implants Restore Sight in Rats with Retinal Degeneration, Humans Next (VIDEO)

Prima Vision, a company based in Paris, France, is reporting that its PRIMA wireless subretinal implants for people who lost their vision has show a great deal of promise in a pre-clinical trial. The technology is designed specifically for those whose natural photoreceptors no longer function, yet who retain retinal neurons that can be electrically activated. A bunch of the implants are injected into the back of the eye, each around 70-μm in width that represents a single pixel. The implants are basically tiny photovoltaic solar panels that emit electricity in response to light hitting their surface.
Link

Sunday, April 05, 2015

Will Your Child Become Nearsighted? One Simple Way To Find Out

This is for everyone whose parents said, "Sitting too close to the TV is going to ruin your eyes." In other words, pretty much all of us.
Sitting too close to the TV doesn't predict nearsightedness, according to a study that tracked the vision of thousands of children over 20 years. Nor does doing a lot of close work.
Instead, as early as age 6 a child's refractive error — the measurements used for an eyeglass prescription — best predicts the risk.
LINK

Thursday, March 12, 2015

How $5000 surgery can permanently change brown eyes to blue

In the classic 1930s movie, "The Wizard of Oz," Dorothy asks the good citizens of Oz whether they could dye her eyes to match her gown, and they happily oblige. Of course, eyes are not like hair, and 75 years on you still cannot dye your eyes to suit your outfit. But it turns out that you can actually change their color with the aid of a laser.
The technique was pioneered by California-based Stroma Medical and it is currently available in several countries, but it has yet to receive approval in the United States. So far,37 patients in Mexico and Costa Rica have undergone the procedure, which permanently turned their eyes from brown to blue.



Read more: http://www.iflscience.com/technology/lasers-can-turn-your-eyes-blue-brown-5000#ixzz3UCtpDO00

Monday, March 09, 2015

BRAIN’S LIGHT DETECTOR IS NOT SO SIMPLE AFTER ALL

Neuroscientists generally think of the front end of the human visual system as a simple light detection system.
The patterns produced when light falls on the retina are relayed to the visual cortex at the rear of the brain, where all of the “magic” happens. That’s when the patterns are transformed into our 3D view of the world.
Now, however, a brain imaging study challenges this basic assumption.

Monday, March 02, 2015

Easy on the eyes: How eyelash length keeps your eyes healthy

It started with a trip to the basement of the American Museum of Natural History in New York to inspect preserved animal hides. Later, Georgia Institute of Technology researchers built a wind tunnel about 2 feet tall, complete with a makeshift eye. By putting both steps together, the team discovered that 22 species of mammals -- from humans, to hedgehogs, to giraffes ¬- are the same: their eyelash length is one-third the width of their eye. Anything shorter or longer, including the fake eyelashes that are popular in Hollywood and make-up aisles, increases airflow around the eye and leads to more dust hitting the surface. "Eyelashes form a barrier to control airflow and the rate of evaporation on the surface of the cornea," 
Link

Wednesday, January 14, 2015

New Glasses Transform The Way Colorblind People See The World

This special eyewear is giving many a new outlook. 
EnChroma, a company in Berkeley, California, has created colorblindness correcting glasses, which allow those who are colorblind to see hues they may have never experienced before. While the sunglasses, which are meant for outdoor use in daylight, were first released two years ago, the company's new version is made from polycarbonate -- a material that's kid-friendly and usable in sports.

Sunday, November 09, 2014

Retinal-scan analysis can predict advance of macular degeneration, study finds

n the study, the Stanford team analyzed data from 2,146 scans of 330 eyes in 244 patients seen at Stanford Health Care over a five-year period. They found that certain key features in the images, such as the area and height of drusen, the amount of reflectivity at the macular surface and the degree of change in these features over time, could be weighted to generate a patient’s risk score. Patients were followed for as long as four years, and predictions of the model were compared with actual instances of progression to wet AMD. The model accurately predicted every occurrence of progression to the wet stage within a year. About 40 percent of the time when the model did predict progression to wet AMD within a year, the prediction was not borne out.

Saturday, November 08, 2014

Microsoft Develops Navigation System for Blind Folks (VIDEO)

The world was not made for blind people and getting around it when you can’t see can be very challenging. This is the 21st century, though, and there’s already technology available that can be put to use in helping blind folks navigate and do things otherwise impossible for them to do alone.Microsoft has taken up this cause and partnered with a number of organizations to develop a system that harnesses smartphones, wireless beacons, and bone-conducting headsets to reveal the surroundings to blind people in an intuitive way.
 LInk

Tuesday, November 04, 2014

THE AMAZING STORY OF THE BLIND ENGINEER (WHO IS ALSO A TRIATHLETE)

Patricia Walsh is one of those people who seems to excel at everything she does. After several years in a successful and coveted stint as an engineer at Microsoft, she left to join Austin, Texas-based mobile payment app Mozido--a job she loves--in 2013. A longtime marathon runner, Walsh completed her first triathalon in 2010 and began breaking records a year later. She launched a motivational speaking business and wrote a book.
She’s also blind.
(..)

LIFE WILL GET VERY DIFFICULT SOMETIMES. YOU CHOOSE HOW TO RESPOND

After losing her vision, Walsh could have gotten angry and bitter, but instead turned to running to help her deal with those emotions. Later, her father was ill and her apartment was burned down by an arsonist. Meanwhile, she had to finish her book, train for her sport, and protect her spot on the national team. The only way to keep going was to focus on what really mattered to her--changing the perception of athletes with disabilities from “participatory hobbyists” to hardcore competitors who are to be taken seriously. She says she could never do that if she got mired in negativity.

BIG ACCOMPLISHMENTS ARE OFTEN A COLLECTION OF SMALL ONES

When Walsh first ventured out onto that Ontario running path, she never could have dreamed that she’d compete in the Paralympic Games one day. She says that accomplishing the big goals is a matter of faithfully doing the work toward achieving them every day. It’s getting on a bus at 5:30 a.m. to go work out and jump in a pool of cold water, even when she doesn’t want to. But the only way to get better is to keep working. Stay in touch with what motivates you.
“The only way to [keep going] is by reminding yourself frequently why this is important to you, and it can’t be something superficial, it has to be something that honest-to-God means something to you at a heart level,” she says.


LINK

Wednesday, October 15, 2014

Stem Cells Seem Safe in Treating Eye Disease

A treatment based on embryonic stem cells clears a key safety hurdle, and might help restore vision.
Link

Friday, September 26, 2014

Kellogg Eye Center at U of Michigan is doing some cutting edge research in retinal disease
Link

Reuters | New KNFB smartphone app gives sight to the blind

National Federation of the Blind | Snap pictures, listen to printed text read aloud, store and share documents and more using the KNFB Reader iPhone app. The KNFB Reader app for iPhone is available in the Apple iTunes app store.

Thursday, September 25, 2014

Does Your Toddler Need Glasses?

Toddlers wearing glasses look adorable, but the cuteness can cause problems. Many children who are still getting used to glasses find wearing them brings unwanted and unrelenting attention. Some people may even accuse parents of putting fake glasses on their children to be trendy.

Glasses have a serious function, though, and sometimes they are crucial to normal development of a child's vision and brain. Eyeglasses can fix more than near or farsightedness and may address common conditions such as amblyopia, or "lazy eye," and eye misalignment. Sometimes doctors require children to wear an eye patch to teach the brain to use vision stimulation from the weaker eye rather than ignore it.
..
Moving fast to detect eyesight issues is crucial, doctors say, because correcting a child's vision early can help curb permanent damage.
"The brain is like cement hardening—you can't mold and shape it as easily the older children get," says Geoffrey Bradford, a professor of pediatric ophthalmology at West Virginia University School of Medicine and a member of the executive committee for ophthalmology for the American Academy of Pediatrics.
The pediatrics group recommends that vision screening begin at age 3 during the annual check-up with a pediatrician. At every well-child appointment before age 3, including at birth, doctors typically look for irregularities in the eyes and ask whether parents have any vision concerns, Dr. Bradford says.
Patients who have a family history of eye problems, or who exhibit symptoms such as eyes crossing, drooping eyelids or infections, should seek earlier attention.
Meanwhile, the American Optometric Association recommends that all babies be examined by an optometrist or ophthalmologist between the ages of six and 12 months, and annually after that.

Saturday, September 13, 2014

Japanese woman is first recipient of next-generation stem cells



    Surgeons implanted retinal tissue created after reverting the patient's own cells to 'pluripotent' state.

    A Japanese woman in her 70s is the world's first recipient of cells derived from induced pluripotent stem cells, a technology that has created great expectations since it could offer the same advantages as embryo-derived cells but without some of the controversial aspects and safety concerns.
    In a two-hour procedure starting at 14:20 local time today, a team of three eye specialists lead by Yasuo Kurimoto of the Kobe City Medical Center General Hospital, transplanted a 1.3 by 3.0 millimetre sheet of retinal pigment epithelium cells into an eye of the Hyogo prefecture resident, who suffers from age-related macular degeneration.

    Friday, August 29, 2014

    MONITOR GLAUCOMA WITH AN EYE IMPLANT AND A PHONE

    Lowering a patient’s internal eye pressure is currently the only way to treat glaucoma. A tiny eye implant paired with a smart phone could help doctors measure and lower eye pressure.
    For the 2.2 million Americans battling glaucoma, the main course of action for staving off blindness involves weekly visits to eye specialists who monitor—and control—increasing pressure within the eye.
    Now, a tiny eye implant could enable patients to take more frequent readings from the comfort of home. Daily or hourly measurements of eye pressure could help doctors tailor more effective treatment plans.

    Saturday, August 23, 2014

    Seeing-Eye Robot Assists Visually Impaired, No Clean-Up Required

    Two familiar items not usually paired: a robot and a cane. At the University of Arkansas at Little Rock, Cang Ye and his engineering lab team have prototyped a robotic walking stick for the blind. This robot-cane combines the basic physics of a walking stick and the technological efficiencies of a computer system.
    Link

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