Reengineering Life
An Engineered Virus Could Cure Color Blindness
Scientists are testing gene therapy in people who see in monochrome
Reengineering Life is a series from OneZero about the astonishing ways genetic technology is changing humanity and the world around us.
People with total color blindness see the world in monochrome — black, white, and shades of gray.
The rare disorder also makes people sensitive to light and reduces the sharpness in their vision. There is currently no cure for it — or even for the more common types of color blindness, which affect only certain colors. But in the future, a one-time treatment known as gene therapy could help these people see in technicolor.
In a small trial in Germany, an experimental gene therapy improved the vision of nine people with total color blindness, also known as known as achromatopsia. After receiving the gene therapy, the eight men and one woman in the trial could see some color, as well as more letters on a vision chart.
