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Heavy Smoking Endangers the Eyes
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— May 27, 2019

Heavy Smoking Endangers the Eyes

By Energy Times Team
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Heavy Smoking Endangers the Eyes

As if you needed another reason to quit: Puffing on more than 20 cigarettes a day can threaten your sight.

So says a group of Brazilian researchers, which based its conclusions on data from a group of healthy volunteers, all between the ages of 25 and 45, divided into two groups, 71 who smoked fewer than 15 cigarettes in their lives and 63 who smoked 20 a day.

All the participants had normal vision, either naturally or corrected with lenses. However, in special tests conducted via a cathode-ray monitor, the smokers showed significant changes in both their color vision and in their ability to detect subtle changes in contrast compared with the nonsmokers.

Previous research has implicated smoking as a risk factor for age-related macular degeneration, a condition which can lead to blurriness or blank spots in the center of the visual field.

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