Scientists map cone opsin structures, opening new paths to treat vision loss

Hundreds of millions of people worldwide live with vision impairments, including color-vision deficiencies affecting ~5% of the global population and age-related macular degeneration causing progressive central vision loss and blindness.

In the quiet architecture of the human eye, six to seven million cone cells have long performed the silent alchemy of turning light into color — yet the molecular machinery behind this gift has remained largely unseen. For the first time, researchers at the Paul Scherrer Institute have mapped the three-dimensional structure of human cone opsins in their resting state, illuminating not only how daylight vision achieves its remarkable speed, but also why it sometimes fails. This structural portrait, drawn with cryo-electron microscopy and laser spectroscopy, offers science a new map for interven

Scientists map cone opsin structures, opening new paths to treat vision loss

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