The Eyes
The eyes work like cameras. Each eye has a lens. Light is focused by these lenses and projected onto a delicate membrane lining on the inner eye (retina). The retina is a collection of light-sensitive cells at the back of the eye. The light that hits these cells is changed into nerve impulses and sent to the brain where it is interpreted so people can see.

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Health Consequences of Smoking
If you smoke, you have a two to three times greater risk of developing cataracts than a nonsmoker. Cataracts are a leading cause of blindness worldwide.

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Benefits of Quitting Smoking
Smokers who quit may lower their risk of developing cataracts.