Special filters in glasses can help color-blind people see colors better

A new clinical study by the UC Davis Eye Center, conducted in collaboration with the French Institute for Stem Cell Research INSERM and the brain, showed that patented special glasses with technically advanced spectral notch filters improve color vision for people with the most common types of visually green defects. The results of the study are published in the journal Current Biology.

At least eight out of 100 men (8%) and one in 200 women (0.5%) suffer from red-green color deficiency (Color Vision Deficiency, CVD). The number of people with such a visual impairment is about 350 million worldwide. While people with normal color vision see more than a million shades and shades, people with color deficiency (or color blindness) see a significantly reduced range of colors. Patients with this diagnosis perceive colors as more muffled and blurry, and some of them are more difficult to distinguish.

Scientists evaluated the effect of spectral notch filters on enhancing the chromatic responses of observers with a red-green color vision deficit for two weeks of use. Filters (EnChroma glasses) are designed to increase the distance between color channels to help people with color blindness see colors more clearly, clearly, and distinctly.

The study participants wore special glasses with filters or placebo glasses. For two weeks, they kept a diary and were retested, but without glasses. Researchers have found that wearing special glasses enhances the reaction to chromatic contrast reactions in individuals with red-green color blindness. It is unclear how long the improvement lasts without the use of filters, but the facts show that the effect persists for some time.

When I wear glasses on the street, all the colors are very bright and saturated, and I can look at the trees and clearly say that each tree has a slightly different shade of green compared to the others. I had no idea how colorful the world was, and I feel that these glasses can help color-blind people better navigate in color and appreciate the world.

Alex Zbilut, one of the study participants