Depression makes the world look dull

Nerve signals from the eye show people with depression are less able to perceive contrast. The finding could be used to help diagnose the condition

See the article here:
Depression makes the world look dull

Related posts:

1. Depression does make the whole world seem dull and gloomy
2. Depression Really Does Make The World Seem Gray
3. ‘Depression’ Makes Return to Mainstream Lexicon
4. Depression Makes Losing Weight Much Harder
5. Tropical Depression 11-E makes landfall in southern Mexico