UC Davis Health Study Finds Special Filters in Glasses Help the Color Blind See Colors Better
A new UC Davis Eye Center study, in collaboration with France’s INSERM Stem Cell and Brain Research Institute, found that special patented glasses engineered with technically advanced spectral notch filters enhance color vision for those with the most common types of red-green color vision deficiency (“anomalous trichromacy”). Notably, the ability to identify and experience expanded color was also demonstrated when color blind test subjects were not wearing the glasses.
This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20200713005065/en/
UC Davis Eye Center color blind study participant Alex Zbylut wearing EnChroma glasses for color blindness (Photo: Business Wire)
At least eight in 100 men (8%) and one in 200 women (0.5%) suffer from red-green color vision deficiency (CVD), totaling 13 million in the U.S. and 350 million worldwide. While those with normal color vision see in excess of one million hues and shades, the CVD see a vastly diminished range of colors. People with CVD experience colors as more muted and washed out, and some colors cause confusion or are more difficult to differentiate. With an undergraduate and graduate student body of nearly 40,000, UC Davis has an estimated 1,700 students with red-green CVD.
The study evaluated the impact of spectral notch filters on enhancing the chromatic responses of observers with red-green CVD over two weeks of usage. The filters (EnChroma glasses) are designed to increase the separation between color channels to help people with color blindness see colors more vibrantly, clearly and distinctly.
The research, published in Current Biology, had CVD participants wear the special filter glasses or placebo glasses. Over two weeks, they kept a diary and were re-tested on days 2, 4 and 11 but without wearing the glasses. The researchers found that wearing the filter glasses increased responses to chromatic contrast response in individuals with red-green color blindness. It is unclear how long the improvement lasts without wearing the filters, but the evidence shows that the effect persists for some time.
“Extended usage of these glasses boosts chromatic response in those with anomalous trichromacy (red-green color vision deficiency),” said John S. Werner, distinguished professor of ophthalmology and a leader in vision science at UC Davis Health. “We found that sustained use over two weeks not only led to increased chromatic contrast response, but, importantly, these improvements persisted when tested without the filters, thereby demonstrating an adaptive visual response.”
Werner noted that this effect cannot be achieved with broad-band filters sold as aids to the color blind. He and his research colleagues believe the study’s findings suggest that modifications of photoreceptor signals activate a plastic post-receptoral substrate in the brain that could potentially be exploited for visual rehabilitation.
“When I wear the glasses outside, all the colors are extremely vibrant and saturated, and I can look at trees and clearly tell that each tree has a slightly different shade of green compared to the rest," said Alex Zbylut, one of the color blind participants in the study who got the placebo glasses first and then tried the special filter version afterwards. "I had no idea how colorful the world is and feel these glasses can help color blind people better navigate color and appreciate the world."
Reactions from other participants about their experiences with the glasses can be found in the Supplement section of the Current Biology article.
Werner, lead author of the study, has published numerous scholarly works and was awarded the prestigious 2015 Verriest Medal from the International Colour Vision Society.
Co-authors on the study, Adaptive Changes in Color Vision from Long-Term Filter Usage in Anomalous but Not Normal Trichromacy, include Kenneth Knoblauch of the Université de Lyon and Inserm Stem Cell and Brain Research Institute in France, and Brennan Marsh-Armstrong, a medical student now at UC San Diego. The research was supported by the National Eye Institute and grants from LABEX CORTEX, Universite de Lyon, operated by the French National Research Agency.
Senior Public Information Representative
UC Davis Health Office of Public Affairs
About Business Wire
For more than 50 years, Business Wire has been the global leader in press release distribution and regulatory disclosure.
Subscribe to releases from Business Wire
Subscribe to all the latest releases from Business Wire by registering your e-mail address below. You can unsubscribe at any time.
Latest releases from Business Wire
Eaton Launches New Line of Wireless Mobile Control Solutions for Heavy Machinery and Field Operations14.8.2020 00:51:00 EEST | Press release
Power management company Eaton today announced its eMobility business has launched a new and improved line of Eaton OMNEX Trusted Wireless™ mobile control solutions for heavy machinery and field operations. The 900 MHz two-way remote-control units allow for the wireless control of high-value machinery in harsh environments, including mining, construction, agriculture, locomotive and marine markets. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20200813005826/en/ Eaton's new OMNEX Trusted Wireless™ controllers can remotely operate heavy machinery, such as vacuum trucks, tow trucks, concrete mixers and cranes. (Photo: Business Wire) “Our next generation of rugged, weatherproof OMNEX wireless controllers were designed with customer input, and offer a number of benefits, including enhanced safety and productivity for machine operators,” said Scott Adams, president, eMobility, Eaton. “Overall, we’ve improved upon the reliability a
IFF to Hold Virtual Special Meeting of Shareholders on August 2713.8.2020 23:15:00 EEST | Press release
Regulatory News: IFF (NYSE: IFF) (Euronext Paris: IFF) (TASE: IFF), a leading innovator of taste, scent, and nutrition, announced today that the previously communicated special meeting of shareholders to consider and vote on the issuance of shares of IFF common stock in connection with the previously announced proposed merger of IFF and DuPont’s Nutrition & Biosciences (“N&B”) business pursuant to a Reverse Morris Trust transaction (the “special meeting”) has been changed to a virtual-only meeting due to the continued public health concerns over the COVID-19 outbreak and the health and safety of its shareholders and employees. Accordingly, the special meeting, to be held on Thursday, August 27, 2020 at 10:00 a.m. Eastern Time, will be held only virtually on the Internet at www.virtualshareholdermeeting.com/IFF2020SM. Shareholders will not be able to attend the meeting or vote physically in person. We have designed the format of the special meeting to provide shareholders the same right
PTC Makes Enterprise Version of Onshape Education Suite Available Free of Charge13.8.2020 23:00:00 EEST | Press release
In advance of the 2020-2021 school year, PTC (NASDAQ: PTC) has made the Onshape® Education Suite’s newly-released Enterprise plan available free-of-charge for K-12 schools and universities that register through November 20, 2020. The newest version of the cloud-based, remote learning suite is offered alongside the Onshape Education Standard plan to help alleviate the burden experienced by educational STEM programs during the COVID-19 pandemic. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20200813005767/en/ The Onshape Education plans are the educational versions of PTC’s Software as a Service product, designed to enable computer-aided design (CAD) activities in a remote learning environment. The Education Standard plan has been free to educational institutions since 2016 and is available to students and educators who want to use professional-grade CAD that is completely online. The newly released Education Enterprise plan bu
DeltaTrak Enhances Its Cold Chain Restart Program to Help Customers Battle COVID-1913.8.2020 19:00:00 EEST | Press release
DeltaTrak®, a leading innovator of cold chain solutions, is enhancing its Cold Chain Restart Program to offer customers safer and more efficient methods to protect their employees and clients from the COVID-19 pandemic. The program was created to help companies reopen on a safe footing by providing access to critically needed PPE solutions. Following an extremely positive response, DeltaTrak has added the ThermoTrace Auto-Check Non-Contact Infrared Forehead Thermometer and Touchless Hand Sanitizer Dispenser to address the need for effective, contactless and hands-free options for temperature measurement and sanitization. “The increased demand for safety and sanitization equipment is driven by our customers’ need to conduct business safely without jeopardizing the health of employees and customers when it comes to using thermometers and hand sanitizers,” said Frederick Wu, President and CEO of DeltaTrak. “Gaining access to these solutions remains a major challenge and we are confident t
Verimatrix to Sponsor Virtual SportsPro Media INSIDER Series Featuring Broadcasting Experts From the NFL, Octagon, Astro, The FA, European Tour & More13.8.2020 18:35:00 EEST | Press release
Regulatory News: Verimatrix (Paris:VMX) (Euronext Paris: VMX), the leader in powering the modern connected world with people-centered security, today announced that Chief Revenue Officer Lu Bolden will join a lineup of sports broadcasting experts to speak on the future of the industry with today’s new need to protect ever-growing amounts of streamed sports and esports. Registration is free. Visit www.insider.sportspromedia.com. With an eye on highlighting the largely unchartered challenges that come with new methods of reaching all types of sports fans, the SportsPro Media INSIDER Series serves as a valuable venue for those seeking to protect revenues when fans are at home instead of stadiums. Traditional sports have found themselves facing the same new business model decisions that esports has organically addressed over the last several years. That makes for a big shift – where new revenue streams are created at warp speed with various streaming and broadcast options for countless typ
Andersen Global Continues African Expansion in Key Markets; Debuts in Mali13.8.2020 16:30:00 EEST | Press release
Andersen Global announces its debut in Mali through a Collaboration Agreement with Bamako-based tax and legal firm Juri-Partner, adding a complementary presence as the organization continues its expansion in key markets throughout Africa. One of the largest firms in Mali, Juri-Partner has grown to include three partners and more than 20 professionals, including two tax specialists. Managing Partner Mamadou Diarra and his team offer a full range of tax and legal services such as business, mining, telecommunications, tax, arbitration and general commercial tax and legal services to private and institutional operations both domestically and internationally. “We strive to create client relationships built on trust and transparency and are committed to stewardship and independence,” Mamadou said. “Business is becoming increasingly global, and clients’ needs can vary depending on country and jurisdiction. By combining Andersen Global’s breadth of coverage and expertise with our local depth o
In our pressroom you can read all our latest releases, find our press contacts, images, documents and other relevant information about us.Visit our pressroom