A Pair of Nanometer Eyes Solves the Problem of Color Blindness

wallpapers Resource 2020-07-20

Causes of Color Blindness

As many as eight men and five women in 1,000 people worldwide suffer from color vision disorder, commonly known as' color blindness '.Color vision disorders vary widely among individuals. Some people are simply insensitive to certain wavelengths of light, such as what we call red-green color blindness. But the most severe form of color blindness cannot distinguish all colors and is called total color blindness. Color vision disorder is caused by abnormal cones in the human eye. Cones are color - and light-sensing cells in the retina, named for their conical outer nodes. Humans have S, M and L cone-shaped photoreceptors, which are most sensitive to blue-purple, green and red light, respectively. Take weak green as an example. When the M-type cone, which is mainly responsible for absorbing green light, is abnormal, the light waves it receives will coincide with the red spectrum absorbed by the L-type cone, which will lead to a decrease in the hue that the human eye can distinguish.

Disorders of Daily Life in Patients with Color Blindness

Color discrimination disorder not only affects people's appreciation of beauty, but more seriously, it disturbs People's Daily life. People with color blindness are limited in their choice of careers, especially those requiring color discrimination such as art, medicine, chemicals, electricians and telecommunications. According to China's 2012 revised Regulations on the Application and Use of Motor Vehicle Driving Licenses, people with red-green color blindness cannot obtain motor vehicle driving licenses. Not being able to tell the difference between red and green can actually cause a lot of problems in life. For example, people can't tell if a banana is ripe by its color.

Changes in Color-blind People after the Use of Nanometer Glasses

The Tel Aviv team has successfully developed a nanostructured contact lens that can significantly reduce red-green amblyopia, the most common color vision disorder. One way to alleviate color blindness is to reduce the overabsorption of color by the cones. Previously, the technology had only been applied to glasses with external frames. But now, Karepov's team has developed a contact lens that can better help people with color vision. The contact lens USES a nano-sized gold oval supersurface to provide a convenient and durable solution for patients. After being corrected with the new contact lens, people with weak green vision can see the "clear green and red" world. Sometimes they even see the world greener than we do, thanks to the brain's processing of visual signals. According to the research, the new contact lenses can improve color contrast and color perception by a factor of 10.