According to a study, published by University of Liverpool researcher Sophie
Wuerger in PLOS One today, it’s
harder for the older people to distinguish between subtle differences in color
shades, particularly yellows and blues, because of an age-related yellowing of
the lens of the eye.
The brain's compensation mechanisms allow a
person’s ability to see color remain constant over a lifespan, even as the cone
receptors in the eye lose their sensitivity to color. The brain’s visual system
can supplement color perception that degrades as people age. She concluded that
the brain compensates for this yellowing, keeping color vision relatively
constant.
Wuerger said in the press release. "…the
visual brain re-calibrates itself as we get older."
20/20
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