Summary
If you've ever been told you have eyes like a hawk, here's what that means: color perception so keen that a hawk circling high in the sky can spot a silvery mouse in a sea of green grass. Keeping your peepers even half as sharp starts with a good night's sleep, researchers recently learned.
This is the first time sleep has been linked to how well you see color. Your color perception "drifts" as the day wears on; gray starts looking greenish, for example. However, those off-kilter tones should vanish when you get eight hours of shut-eye. If they don't, something besides lack of zzz's may be going on. A few possibilities:See the full content of this document
Extract
A Colorful New Reason to Hit the Hay
" cents If something appears pale or grayish that y...
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