Researchers at the University of Granada used computer simulations to find that certain color filters slightly increase the discernible colors, but this improvement is negligible, and this increase will not make the number of colors perceivable by color-blind people differ from color-blind people. the same. Did not suffer from this disease.
In Spain alone, there are nearly 2 million color-blind people (1 out of 12 men are blind and 1 out of 200 women), and their ability to distinguish colors is comparable to what the majority of the population sees The drop. Therefore, they confuse certain colors, in addition to being unable to apply for certain excluded jobs (train driver, pilot, police, firefighter, etc.), they also face certain daily difficulties in their daily lives.
Five researchers from the University of Granada (UGR) Computational modeling Nearly 100,000 filter Different colors, and studied which of them increases the number of colors that color-blind people can perceive, and their impact on the results of two tests that are widely used to diagnose color blindness: Ishihara test with Test Farnsworth-Munsell 100 Hue.
Among the modeled filters, UGR scientists included lenses with color filters that made the commercialization of electronic glasses possible.VINO and EnChromaIn recent years, viral videos have flooded social networks. These videos flood the color-blind people. When they wear these “color-blind glasses”, they will feel very excited.
The results are published in the journal SensorThe results show that although certain filters increase the number of discernible colors, this improvement is not significant, and this increase does not make color blindness feel the same as subjects without this disorder in any case The number of colors.
Simulate how different types of observers (normal, normal, protanopepe, deuteration and deuteration) perceive the same scene without a filter (top) and with a filter (bottom). / UGR
They also found that none of these filters passed the Ishihara test or the Farnsworth-Munsell 100 Hue test, which is very reliable for evaluating human color vision.
The research data supports the following hypothesis: Although business activities In companies that sell such glasses, their filters will never allow color-blind people to perceive the scene in a way similar to that perceived by observers with normal color vision.
Check for hypothetical improvements in vision
This work is part of the research line of the UGR Optical Department, which analyzes the effectiveness of various aids that are commercially available to “improve” the color vision of people with color blindness.
In 2018 and 2019, the same team has proved that EnChroma’s Cx-65 glasses and VINO’s 02 Amp Oxy-Iso glasses are ineffective, because neither of these methods can improve the color vision of people with color blindness.
Miguel Ángel Martínez Domingo, Luis Gómez Robledo, Eva Valero Benito, Rafael Huertas Roa and Javier Hernández Andrés. “Spectral filter selection to increase the chromaticity diversity of CVD subjects”. Sensor, 20 (7), 2023 (2020).