Scientists Created Olo, An Unprecedented Blue-Green Color: Understand How Lasers Stimulated The Retina And The Controversies Surrounding The Experiment!

Written by Bruno Teles

Published on 24/04/2025 at 16:47

Cientistas Revelam Cor “Olo”: Azul-Esverdeada Jamais Vista Pelo Olho Humano

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Experience with Lasers Stimulated Retina Cells of 5 Participants; Understand the Technology and the Controversies.

A team from the University of California created the color olo, a bluish-green never before perceived by the human eye. Using lasers, five volunteers witnessed the hue in the laboratory. Learn how the technique works and why “olo” divides opinions.

How the “olo” Was Produced in the Laboratory

The olo was generated by a device with lasers and mirrors that stimulated specific cells in the retina. Scientists fired light pulses directly into the M (green) cones of the participants’ eyes, without affecting the L (red) or S (blue) cones.

This isolated stimulation, impossible in natural vision, sent an unprecedented signal to the brain, recorded as a color “more saturated than any other in the real world,” according to the researchers.

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The Functioning of the Retina in the Experiment

Scientists Reveal Color "Olo": Bluish-Green Never Seen by the Human Eye

In the retina, the M (green) cones are normally activated along with other photoreceptors. In the study, the lasers controlling the light cell by cell allowed the isolation of the M cone response.

This created a pattern of activation never experienced naturally, resulting in the perception of the olo. The participants confirmed the color on a display designed for the test.

Criticism of the “New Color” Olo

Scientists such as John Barbur from City St George’s challenge the olo as a truly new color. For him, it is simply a more intense green, generated only by the artificial stimulation of the M cones in people with normal vision.

Barbur argues that if the L (red) cones were isolated, the brain would perceive a “deep red,” following the same logic. In other words, the olo would be an extreme variation, not a novel color.

Practical Applications of the Technology

Despite the controversies, the creators of olo argue that the technique may help colorblind individuals. By controlling the stimulation of specific cones, it would be possible to compensate for deficiencies in color perception.

Ren Ng, the leader of the study, admits that replicating the olo outside the laboratory is difficult, but the research paves the way for advances in optics and treatment for color blindness.

The olo challenges our understanding of how we see colors. While some see a revolution, others see only an overstimulated green. And you: do you believe it is possible to create colors never seen before?

Scientists Created Olo, An Unprecedented Blue-Green Color: Understand How Lasers Stimulated The Retina And The Controversies Surrounding The Experiment!

Experience with Lasers Stimulated Retina Cells of 5 Participants; Understand the Technology and the Controversies.

How the “olo” Was Produced in the Laboratory

The Functioning of the Retina in the Experiment

Criticism of the “New Color” Olo

Practical Applications of the Technology

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Scientists Created Olo, An Unprecedented Blue-Green Color: Understand How Lasers Stimulated The Retina And The Controversies Surrounding The Experiment!

Experience with Lasers Stimulated Retina Cells of 5 Participants; Understand the Technology and the Controversies.

How the “olo” Was Produced in the Laboratory

The Functioning of the Retina in the Experiment

Criticism of the “New Color” Olo

Practical Applications of the Technology

While an average building in London or New York takes three years to be completed, in China a 26-story tower went up in five days with about 100 workers, and the global modular construction market already moves US$ 95 billion per year.

A Chinese factory in Guangdong is assembling a humanoid robot every 30 minutes while Tesla, Figure, and Boston Dynamics still struggle to deliver 10 thousand per year.

Australia installs giant concrete structures on the seabed 800 meters from the shore to create an ocean intake for desalination that will draw in saltwater and produce 30 million liters of drinking water per day.

Secret chamber sealed 4,500 years ago found in the Pyramid of Khufu, and Hawass announces its opening to the world in 2026

A public school student single-handedly created a machine capable of treating water for up to 50 people using only solar energy. It was awarded third place at one of the most important science fairs in the world.

Germany installed vertical solar panels on a lake in Bavaria, and the result broke conventional logic: instead of producing energy at midday peak, the plant generates more early in the morning and in the evening, exactly when families turn on appliances and factories are in full swing.

While communities suffer from water scarcity and the advancing desert, women in Morocco use nets high up in the mountains to trap fog droplets, fill reservoirs, and transport drinking water through more than 10 km of piping.

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The traffic sign with an arrow pointing down that confuses thousands of drivers may indicate an invisible risk on the road, and many people pass by it without understanding its true meaning.

Berlin opens a 25,000 m² hole in the center and unearths its medieval origins, with archaeologists racing against construction to save coins, latrines, shoes, ceramics, and bones of the first inhabitants before the site soon becomes urban apartments.

Mother and daughter left the city, became cheesemakers, and now sell sheep’s milk products in RS, according to a report, with award-winning sweets, their own agribusiness, and a demanding routine balancing motherhood, animals, climate, production, and sales in a niche market.