A new study shows how people suffering from depression can also be affected by a lack of visual contrast.

New studies indicate that people suffering from depression are also affected by a lack of visual contrast.  By conducting vision tests, researchers detected a pattern that linked the gloomy mental state to difficulty detecting black-and-white contrast differences. The handicap in perceived contrast alters how people visually experience the world and makes it a less pleasurable place for living.

The scientists conducted electroretinogram tests on subject retinas to measure the responsiveness of its neurons. Depressed patients had noticeable lower retinal responses to black-and-white contrasts than happier individuals. The lack of contrast can negatively impact drive and attention – the two main symptoms of depression. Will contrast correction eventually replace anti-depressants? Although the findings are strong, scientists plan to further tests physical ailment’s correlation to its subjective state.

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