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American Focus > Blog > Tech and Science > Researchers Discover New Color That’s Impossible to See without Lasering Your Retinas
Tech and Science

Researchers Discover New Color That’s Impossible to See without Lasering Your Retinas

Last updated: April 19, 2025 12:05 am
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Researchers Discover New Color That’s Impossible to See without Lasering Your Retinas
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A groundbreaking discovery has been made in the world of color vision, where researchers have identified a new color that lies outside the range of human visual perception. This color, described as an impossibly saturated bluish green, has only been seen by five individuals who underwent a unique laser procedure to stimulate their retinas.

The human eye is capable of perceiving a vast array of colors, with estimates suggesting that we can distinguish up to 10 million different shades. This ability is made possible by three types of cone cells in the retina, each sensitive to specific wavelengths of light. S cones detect short wavelengths (blue), M cones respond to medium wavelengths (green), and L cones are triggered by long wavelengths (red). These signals are then processed by the brain to create the full spectrum of colors we see.

However, the ranges of these cone cells overlap, meaning that a single wavelength of light can activate multiple types of cones simultaneously. To bypass this limitation, researchers developed a technique called “Oz,” which involves using lasers to target specific cone cells in the eye. By delivering light only to M cone cells, they were able to stimulate a new color perception that had never been experienced before.

The color, named “olo,” is described as a blue-green with unprecedented saturation, beyond what can be displayed on a computer screen. Participants who saw olo confirmed that it was a color outside the normal human range of vision through color-matching experiments. Adding or subtracting white light to olo resulted in a color that matched a teal laser, further confirming its uniqueness.

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The implications of this discovery are vast, with potential applications in fields such as vision research, screen technology, and even enhancing the visual experience for color-blind individuals. While the Oz experience is temporary and not a permanent treatment for color blindness, it opens up new possibilities for understanding color perception and creating innovative technologies in the future.

Overall, this study represents a significant advancement in our understanding of color vision and the complex mechanisms that govern how we perceive the world around us. The researchers behind this groundbreaking research are paving the way for new discoveries and innovations that could revolutionize the way we see and interact with color in the future.

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