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Air Pollution Linked To A Heightened Risk Of Diseases Of The Eyes

AMD is the leading cause of irreversible blindness among people over 50 in high-income countries

Air pollution is linked to a heightened risk of progressive and irreversible sight loss, known as age-related macular degeneration (AMD), a new study suggests. The findings, published in the British Journal of Ophthalmology, indicate that people in the most polluted areas were at least 8 percent more likely to report having AMD.

“Our findings suggest that living in an area with polluted air, particularly fine particulate matter or combustion-related particles that come from road traffic, could contribute to eye disease,” said lead author, Paul Foster, Professor at University College London in the UK.

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“Even relatively low exposure to air pollution appears to impact the risk of AMD, suggesting that air pollution is an important modifiable risk factor affecting risk of eye disease for a very large number of people,” Foster added.

AMD is the leading cause of irreversible blindness among people over 50 in high-income countries, with the numbers of those affected projected to reach 300 million by 2040. Known risk factors include older age, smoking, and genetic make-up.

air pollution
People living in polluted areas are likely at higher risk to attract diseases of the eyes. Pixabay

For the study, the team drew on data from 115,954 UK Biobank study participants aged 40-69 with no eye problems at the start of this study in 2006. Participants were asked to report any formal diagnosis of AMD by a doctor. And structural changes in the thickness and/or numbers of light receptors in the retina — indicative of AMD — were assessed in 52,602 of the participants.

ALSO READ: Analyzing The Impact Of Air Pollution In New Delhi

Measures of ambient air pollution included those for particulate matter (PM2.5), nitrogen dioxide (NO2), and nitrogen oxides (NOx).

The research team found that people in areas with higher levels of fine particulate matter pollution were more likely to report having AMD after accounting for potentially influential factors such as underlying health conditions and lifestyle. All pollutants, except coarse particulate matter, were associated with changes in retinal structure and diseases of the eyes. (IANS)

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