Scientists are warning that smokers are in danger of damaging their eyes. Smokers are two times more likely to lose their vision than non-smokers. Smoking damages the lungs and heart. Not many people know it also damages the eyes. The Association of Optometrists (AOP) started a campaign to tell people about the danger of smoking to the eyes. The campaign is called "Stub it out". The word "stub" means put out a cigarette by pushing the end against something; "stub it out" is saying, "stop smoking". The AOP said only one in five people thinks smoking damages the eyes.
The AOP explained why smoking harms the eyes. Cigarette smoke gets in the eyes and causes different problems. The smoke contains poisons that can damage the eyes. It also contains small pieces of metal like lead. This can get into the eyes and lead to cataracts - a problem that causes the eyes to become cloudy. People with cataracts need an operation to restore their sight. Smoke can also worsen sight problems for people with diabetes. The AOP said smokers are also three times more likely to damage eye muscles. The AOP has said smokers should quit.