Blue eyes may be better for reading in dim light than brown eyes

People with blue eyes can read better in darker conditions than those with brown eyes, a small study has found. This suggests having blue eyes is an advantage in low-light conditions, and might help explain why the trait evolved in northern Europe. But the finding needs to be confirmed in a larger study.

�It’s preliminary,” says Kyoko Yamaguchi at Liverpool John Moores University in the UK, who studies the genetic…