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
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
RoboSense 80 Laser-Beam LiDAR RS-Ruby Lite Is Officially for Sale, Early-Bird Price $12,8004.8.2020 20:00:00 CEST | Press release
RoboSense http://www.robosense.ai/, the leading provider of smart LiDAR sensor, today launched an 80 laser-beam 3D sensing LiDAR ready for customer delivery with early-bird price of $12,800 (limited offer till 31st August, 2020), and standard price of $15,800. The timing of announcing this favorable package also marks the company's 6-year anniversary. The performance of the RS-Ruby Lite is close to that of the 128 laser-beam LiDAR RS-Ruby, with a vertical angular resolution of 0.1 degrees and 160m@10% ranging ability (with the longest detection range of 230 meters), making it suitable to address medium-and-high-speed autonomous driving applications with a price much more affordable to accelerate the commercialization of smart and safe transportation. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20200804005578/en/ The RS-Ruby Lite’s on-vehicle road-test point cloud image (Photo: Business Wire) Inheriting The Superb Performanc
Andersen Global Enters Chile With the Addition of Two Collaborating Firms4.8.2020 15:30:00 CEST | Press release
Andersen Global enters the Chilean market through Collaboration Agreements with two Santiago-based firms: law firm Chirgwin Peñafiel and tax firm SPASA Consulting. The firms are in close partnership with each other and add depth and breadth to the organization’s Latin American platform as it continues its steady expansion. Founded in 2009, Chirgwin Peñafiel, led by Office Managing Partner Andrés Chirgwin, is a full-service law firm specializing in commercial and corporate law, M&A, energy, labor law and banking & finance. The firm works with a variety of corporate clients, being strongly focused on providing legal support to multinational companies with operations in Chile, while also assisting Chilean-based companies with local and international legal needs. Chirgwin Peñafiel has been recognized by IFLR1000, Leaders League and Best Lawyers. “Our firm is committed to delivering quality, comprehensive solutions to our local and international clients,” Andrés said. “Andersen Global’s cap
Lam Research and VELO 3D Strike Strategic Agreement to Use Metal Additive Manufacturing Applications for Production of Semiconductor Capital Equipment4.8.2020 15:25:00 CEST | Press release
Digital manufacturing innovator https://cts.businesswire.com/ct/CT?id=smartlink&url=https%3A%2F%2Fwww.velo3d.com%2F&esheet=52260044&newsitemid=20200804005187&lan=en-US&anchor=VELO3D&index=1&md5=2dc9de05eb81f5b68a6b6bbf24982eea VELO3D and Lam Research Corporation (Nasdaq: LRCX) today announced a joint development agreement that includes collaboration on novel materials and designs in metal additive manufacturing (AM) or 3D printing applications for the semiconductor industry. Lam plans to significantly increase the volume of parts produced by AM over the next five years. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20200804005187/en/ The VELO3D Sapphire 3D metal printer (Photo: Business Wire) Additive manufacturing allows transformation of the supply chain from production of parts typically manufactured by subtractive methods, to higher performance, innovative designs that enable agile supply chains to adopt Industry 4.0 prin
Panasonic Corporation meddelar verifiering av hämmande effekten hos hydroxylradikalerna, som finns i vatten (elektrostatisk atomiserad vattenpartikel i nano-storlek), på det nya coronaviruset (SARS-CoV-2)4.8.2020 14:32:00 CEST | Pressmeddelande
PanasoniPanasonic Corporation meddelade idag att de, i samarbete med Mayo Yasugi, docent, Department of Veterinary Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, har verifierat den hämmande effekten hos hydroxylradikalernas, som finns i vatten, (elektrostatisk atomiserad vattenpartikel i nano-storlek) på det nya coronaviruset (SARS-CoV-2). Hydroxylradikaler som finns i vatten är partikelformiga joner som innehåller hydroxylradikaler som genereras genom att applicera en högspänning på fukt i luften. De karakteriseras av att de är starkt oxidativa och mycket reaktiva. Panasonic har bedrivit forskning på denna teknik under de senaste 20 åren sedan 1997 och har verifierat dess effektivitet på olika områden, inklusive hämning av patogen mikroorganism (bakterier, svampar och virus) och allergener, och att den bryter ned PM 2.5-komponenter som har negativa effekter på människokroppen*1. 2012 genomförde Panasonic ett virusklareringstest med en tredjep
Imricor Announces First Sales Collaboration With Philips4.8.2020 14:00:00 CEST | Press release
Imricor Medical Systems, Inc. (Company or Imricor) (ASX:IMR) the worldwide leader in MRI-guided cardiac ablation products, is pleased to announce the first sales collaboration with Philips, a global leader in healthcare technology. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20200804005317/en/ Imricor announces first sales partnership with Philips. (Photo: Business Wire) The sales collaboration provides Philips non-exclusive rights to re-sell Imricor’s Advantage-MR System, along with Philips’ industry-leading MRI scanners in European countries that recognize the CE mark. This agreement is the first such agreement signed by Imricor. Imricor’s Chair and CEO, Steve Wedan said: “This agreement is a major milestone for Imricor, allowing Philips to take the lead on driving iCMR lab adoption and enabling us to focus on supporting utilization, growing our portfolio of consumable devices and expanding our indications for use. In thi
Latest Generation YellowScan Mapping Systems Rely on Velodyne Lidar Sensors to Meet Demanding Needs of Survey Professionals4.8.2020 14:00:00 CEST | Press release
Velodyne Lidar, Inc. today announced two new generation YellowScan mobile mapping systems use Velodyne’s lidar sensors to help achieve the high precision and accuracy needed in aerial 3D mapping. Velodyne’s powerful lidar sensors generate real-time georeferenced point cloud data that allows YellowScan systems to accurately measure and analyze an area so customers can avoid time-intensive, costly manual surveys. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20200804005168/en/ The YellowScan Surveyor Ultra is a high density and long range mapping solution equipped with a Velodyne Ultra Puck™ sensor. (Photo: YellowScan) The YellowScan Surveyor Ultra is a high density and long range mapping solution equipped with a Velodyne Ultra Puck™ sensor and ideally suited for high speed unmanned aerial vehicles (UAV), such as VTOL and helicopter drones. The YellowScan Surveyor is the company’s lightest system – at 1.6 kg including the batte
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