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
(c) 2018 Business Wire, Inc., All rights reserved.
Business Wire, a Berkshire Hathaway company, is the global leader in multiplatform press release distribution.
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
Sagemcom AMI Solution, a Key Driver in the Swedish Energy Transition to a Sustainable Future21.9.2020 10:30:00 CEST | Press release
In September, ELLEVIO will continue to improve the Swedish electricity system by being one the first Nordic DSO to start its 2nd generation smart meters large scale rollout. This massive rollout is the result of joint achievements between ELLEVIO, Sagemcom and its local Partner, ONE Nordic. Since the award in March 2019, Sagemcom has developed and delivered a new generation of S211 single phase meters and T211 polyphase meters which allow ELLEVIO to take up the new energy landscape and customer care. The advanced deep indoor dual cellular technology LTE NB IoT + LTE Cat-M is used to secure the reliability of the solution. In less than 8 months and within a specific context, Sagemcom has developed and certified the new generation of smart meters which are installed in the field by ONE Nordic since June 2020 in Stockholm area. The new key features have already been deployed offering a combination of end-user experience - through a customer local interface (P1 Port) - and Low-Voltage netw
Market Failure? kENUP and YUVEDO High-Level Online Event Kick-starts Call for Projects Tackling the Growing Threat of Parkinson’s and Other Neurodegenerative Diseases .21.9.2020 10:14:00 CEST | Press release
On Friday, 18 September 2020, YUVEDO Foundation and kENUP Foundation held a high-level online conference to kick-start an open public call for projects tackling the growing threat of Parkinson’s (PD) and other neurodegenerative diseases (NDD). Despite the predictable medical, social and economic challengesof NDDs, too little has happened in recent years to address the underlying causes of NDDs. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20200921005283/en/ Market and Regulatory Failure? High-Level Online Conference Kick-starts Open Public Call for Projects Tackling the Growing Threat of Parkinson’s and Other Neurodegenerative Diseases (Photo: Business Wire) An expert report by Professor Maier-Rigaud of NERA Economic Consulting presented at the conference, showed that there are indications for market and regulatory failure around the development of interventions against PD and other NDDs: High risk in product development is
PMI Announces Keynote Speeches at International Forums During UN General Assembly21.9.2020 10:00:00 CEST | Press release
MEDIA ADVISORY: Philip Morris International Inc. (PMI) (NYSE: PM) today announced its participation in a series of events over the course of the United Nations General Assembly. Senior executives, including PMI’s CEO André Calantzopoulos and COO Jacek Olczak, will address international forums to talk about the critical role that science can play in driving innovation, progress, and policy to tackle the most pressing global issues. Keynote virtual events include: September 21: PMI COO Jacek Olczak is joining the Diplomatic Courier’s “The SDG’s in Action Forum”discussing “Industry, Infrastructure and Innovation” September 23: Silke Muenster, Chief Diversity Officer, will address The Hill’s “Work Defined” virtual event September 24:PMI CEOAndré Calantzopoulos will present high-level remarks during the 2020 Concordia Annual Summitexploring “Leading Industry Transformation with Purpose” September 29: André Calantzopoulos will be a panelist in a custom event with Dow Jones' The Trust on “Mul
Thales Empowers Organisations to Simplify the Discovery, Protection and Control of Sensitive Data21.9.2020 09:00:00 CEST | Press release
Thales today announced the launch of the CipherTrust Data Security Platform, the industry’s first unified data protection solution that enables organisations to discover, protect, and control their most sensitive data wherever it resides. The new platform helps solve key challenges they face today. These include data security complexity caused by multi-cloud adoption, evolving global and regional privacy regulations, as well as the risk of data breaches from external and internal threats. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20200921005046/en/ Copyright Thales Drawing from years of data protection innovation, Thales has built the CipherTrust Data Security Platform to seamlessly unify data discovery, classification and data protection, along with strong access controls and centralised key management. The ‘all-in-one’ platform combines the best of Thales’s Vormetric and SafeNet KeySecure technologies to give organisati
Inflazome Announces Acquisition by Roche21.9.2020 08:00:00 CEST | Press release
Inflazome announced today that it has closed a share purchase agreement with Roche (SIX: RO, ROG; OTCQX: RHHBY) in which Inflazome’s shareholders received an upfront payment of €380 million, and are eligible to receive additional contingent payments to be made based on the achievement of certain predetermined milestones. Inflazome was founded in 2016 by leading medical researchers Prof Matt Cooper (University of Queensland, Australia) and Prof Luke O’Neill (Trinity College Dublin, Ireland). The company is a leader in the development of inflammasome inhibitors. The acquisition gives Roche full rights to Inflazome’s entire portfolio which is composed of clinical and preclinical orally available small molecule NLRP3 inhibitors. Roche intends to further develop NLRP3 inhibitors across a wide variety of indications with high unmet medical need. Matt Cooper, Chief Executive Officer, Inflazome, commented: “We are delighted to close this deal with Roche, an outstanding pharmaceutical company w
Reactev Is Born: a Next-generation Dynamic Pricing Tool21.9.2020 08:00:00 CEST | Press release
The digital market is taking competitiveness to new heights. There are greater demands when it comes to decision making and, above all, the speed at which these decisions need to be made. Without a doubt, it’s in pricing strategies that this competitiveness is most palpable. In this context, Reactev was born, the tool that helps retailers make the best pricing decisions at just the right time. This software was developed by Minderest a pioneering company in price, product, and stock monitoring, which has been developing pricing projects for some of the world’s largest companies since 2012. Reactev is a tool created by and for retailers that doesn’t only aim to help them with their processes and decisions, but to also change the way they design their pricing strategies. In a highly competitive environment where, in just seconds, the wrong pricing decision can mean a big loss in sales while the correct decision can strike a blow against the competitions, Reactev equips retailers with its