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الخميس، 4 يوليو 2019

Smoking hurts the eyes .. Does it cause blindness




Smoking hurts the eyes ..Does it cause blindness?





Millions of people are at risk of continuing to smoke, according to a warning to ophthalmologists in the UK.



Despite the obvious relationship between smoking and eye damage, only one out of every five people in the UK understands that smoking can lead to blindness, according to a survey by the British Society of Ophthalmologists.



According to the Royal National Institute of the Blind in Britain, the risk of blindness among smokers is twice that of nonsmokers. This is because tobacco smoke can cause and aggravate a number of eye diseases.



Your eyes?



Cigarette smoke contains toxic chemicals that can irritate and damage the membranes of the eyes.



For example, heavy metals, such as lead and copper, can assemble into the eye lens, the transparent part behind the pupil that brings light rays to the focus, causing the lens to darken, making the vision cloudy.



Smoking can also increase vision problems associated with diabetes, by damaging the blood vessels in the back of the eye (retina).

Men with age-related macular degeneration are also three times more likely to develop macular degeneration than non-smokers.


Macular degeneration is a condition that affects a person's central vision, which means losing sight of the finer details of things.

Smokers are 16 times more likely than others to have a sudden loss of vision due to optic neuropathy, as blood flow to the eye stops.



In the 2006 survey of adults, 18 percent of them said correctly that smoking increased the risk of blindness or blindness, while three-quarters of the respondents (76 percent) knew that smoking was linked to cancer alone.

Best steps



"Stop smoking, or avoid it, is one of the best steps you can take to protect your eyes, as well as regular eye examinations," said the British Society of Ophthalmologists.



"People tend to know the link between smoking and cancer, but many of them do not realize the effect of smoking on the eyes," said Aisha Fadlani, an eye specialist and consultant at the British Society of Ophthalmologists.



"Smoking increases the risk of visually threatening conditions, such as macular degeneration associated with aging, which is an important reason for smokers to quit smoking," she said.





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