Passive smoking blindness risk

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Passive smoking increases the risk of one of the most common causes

of blindness, a study has found.

A Cambridge University team looked at the impact of smoking on age-

related macular degeneration (AMD), the British Journal of

Ophthalmology reported.

 

Living with a smoker for five years doubled the risk of the disease

and regular smoking tripled it, they found.

 

Campaigners said it highlighted the need for an outright ban on

smoking in enclosed public places and workplaces.

 

This is an extremely important finding and further evidence to back

RNIB's call for a ban on smoking in all enclosed public places and

workplaces across the UK

 

Research has already shown that smoking increases the risk of vision

problems, but this study has presented the clearest evidence yet that

passive smoking can have a similar impact.

 

AMD usually develops after a person reaches the age of 50.

 

It affects the central part of the retina, key for reading and

driving, leaving only peripheral vision intact. It does not always

lead to blindness.

 

There are about 500,000 people in the UK with AMD.

 

The researchers studied 435 people with AMD and 280 people without,

looking at their smoking habits and the development of disease.

 

They found the more a person smoked the greater the risk of them and

their partners developing AMD.

 

Regularly smoking a pack of cigarettes or more a day for 40 years

almost tripled the risk, while living with a smoker for at least five

years doubled it.

 

However, they found for people who had given up smoking for 20 years

or more the risk was cut to levels comparable to non-smokers.

 

Report co-author Professor John Yates said the researchers

had " demonstrated a clear association " between smoking and the

disease.

 

" Of the many environmental factors investigated in relation to AMD,

smoking is the one most consistently found to be associated with

increased risk. "

 

Anita Lightstone, the Royal National Institute of the Blind's head of

eye health, said: " This is an extremely important finding and further

evidence to back RNIB's call for a ban on smoking in all enclosed

public places and workplaces across the UK. "

 

The government has proposed a ban on smoking in England in all

workplaces, with the exception of pubs which do not serve food and

private members' clubs.