Study Reveals that Heavy Smoking Affects Vision

It appears that smoking affects more than just your lungs and predisposition to diseases such as cancer and heart disease. A new study has drawn a link between heavy smoking and the ability to discern colours and contrasts. Yet another reason to give up smoking.

Study: Heavy Smoking May Damage Vision

Heavy smoking may actually damage color and contrast vision, researchers report.

They looked at 71 healthy people who smoked fewer than 15 cigarettes in their lives and 63 people who smoked more than 20 cigarettes a day. The participants were aged 25 to 45 and had normal or corrected-to-normal vision.

But the heavy smokers showed significant changes in their red-green and blue-yellow color vision and also had greater difficulty discriminating contrasts and colors than nonsmokers.

The study was published recently in the journal Psychiatry Research.

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